                         SEQUENCE LISTING

<110>  Xencor, Inc.
       Saville, Michael Wayne
       Foster, Paul
 
<120>  BISPECIFIC ANTIBODIES THAT BIND CD123 AND CD3

<130>  067461-5520-WO

<140>  Filed herewith
<141>  2019-04-26

<150>  US 62/664,030
<151>  2018-04-27

<150>  US 62/713,433
<151>  2018-08-01

<150>  US 62/774,795
<151>  2018-12-03

<150>  US 62/774,796
<151>  2018-12-03

<160>  18    

<170>  PatentIn version 3.5

<210>  1
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP14045 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Heavy Chain 1

<400>  1

Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Lys Gln Ser His Gly Lys Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asp Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Pro Val Ala Gly Pro 
225                 230                 235                 240 


Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser 
                245                 250                 255     


Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Lys His Glu Asp 
            260                 265                 270         


Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn 
        275                 280                 285             


Ala Lys Thr Lys Pro Arg Glu Glu Glu Tyr Asn Ser Thr Tyr Arg Val 
    290                 295                 300                 


Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu 
305                 310                 315                 320 


Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys 
                325                 330                 335     


Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr 
            340                 345                 350         


Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr 
        355                 360                 365             


Cys Asp Val Ser Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu 
    370                 375                 380                 


Ser Asp Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu 
385                 390                 395                 400 


Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys 
                405                 410                 415     


Ser Arg Trp Glu Gln Gly Asp Val Phe Ser Cys Ser Val Met His Glu 
            420                 425                 430         


Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445             


Lys 
    


<210>  2
<211>  485
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP14045 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Heavy Chain 2

<400>  2

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe Ser Thr Tyr 
            20                  25                  30          


Ala Met Asn Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Gly Arg Ile Arg Ser Lys Tyr Asn Asn Tyr Ala Thr Tyr Tyr Ala Asp 
    50                  55                  60                  


Ser Val Lys Gly Arg Phe Thr Ile Ser Arg Asp Asp Ser Lys Asn Thr 
65                  70                  75                  80  


Leu Tyr Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr 
                85                  90                  95      


Tyr Cys Val Arg His Gly Asn Phe Gly Asp Ser Tyr Val Ser Trp Phe 
            100                 105                 110         


Ala Tyr Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ser Gly Lys Pro 
        115                 120                 125             


Gly Ser Gly Lys Pro Gly Ser Gly Lys Pro Gly Ser Gly Lys Pro Gly 
    130                 135                 140                 


Ser Gln Ala Val Val Thr Gln Glu Pro Ser Leu Thr Val Ser Pro Gly 
145                 150                 155                 160 


Gly Thr Val Thr Leu Thr Cys Gly Ser Ser Thr Gly Ala Val Thr Thr 
                165                 170                 175     


Ser Asn Tyr Ala Asn Trp Val Gln Gln Lys Pro Gly Lys Ser Pro Arg 
            180                 185                 190         


Gly Leu Ile Gly Gly Thr Asn Lys Arg Ala Pro Gly Val Pro Ala Arg 
        195                 200                 205             


Phe Ser Gly Ser Leu Leu Gly Gly Lys Ala Ala Leu Thr Ile Ser Gly 
    210                 215                 220                 


Ala Gln Pro Glu Asp Glu Ala Asp Tyr Tyr Cys Ala Leu Trp Tyr Ser 
225                 230                 235                 240 


Asn His Trp Val Phe Gly Gly Gly Thr Lys Leu Thr Val Leu Glu Pro 
                245                 250                 255     


Lys Ser Ser Asp Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Pro 
            260                 265                 270         


Val Ala Gly Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr 
        275                 280                 285             


Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val 
    290                 295                 300                 


Lys His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val 
305                 310                 315                 320 


Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser 
                325                 330                 335     


Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu 
            340                 345                 350         


Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala 
        355                 360                 365             


Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro 
    370                 375                 380                 


Gln Val Tyr Thr Leu Pro Pro Ser Arg Glu Gln Met Thr Lys Asn Gln 
385                 390                 395                 400 


Val Lys Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala 
                405                 410                 415     


Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr 
            420                 425                 430         


Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu 
        435                 440                 445             


Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser 
    450                 455                 460                 


Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser 
465                 470                 475                 480 


Leu Ser Pro Gly Lys 
                485 


<210>  3
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP14045 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Light Chain

<400>  3

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Thr 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  4
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13760 7G3_H0L0_Fab_His Heavy chain

<400>  4

Glu Val Gln Leu Gln Gln Ser Gly Pro Glu Leu Val Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Met Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Lys Gln Ser His Gly Lys Ser Leu Glu Trp Ile 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Ser Ser Thr Ala Tyr 
65                  70                  75                  80  


Met His Leu Asn Ser Leu Thr Ser Glu Asp Ser Ala Val Tyr Tyr Cys 
                85                  90                  95      


Thr Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ala Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  5
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13760 7G3_H0L0_Fab_His Light chain

<400>  5

Asp Phe Val Met Thr Gln Ser Pro Ser Ser Leu Thr Val Thr Ala Gly 
1               5                   10                  15      


Glu Lys Val Thr Met Ser Cys Lys Ser Ser Gln Ser Leu Leu Asn Ser 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Leu Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Val Gln Ala Glu Asp Leu Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  6
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13761 7G3_H1L1_Fab_His Heavy chain

<400>  6

Gln Val Gln Leu Val Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Arg Gln Ala Pro Gly Gln Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Gln Gly Arg Val Thr Met Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Thr Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  7
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13761 7G3_H1L1_Fab_His Light chain

<400>  7

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Ser 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  8
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13961 7G3_H1.107_L1_Fab_His Heavy chain

<400>  8

Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Arg Gln Ala Pro Gly Gln Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  9
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13961 7G3_H1.107_L1_Fab_His Light chain

<400>  9

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Ser 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  10
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13963 7G3_H1.109_L1_Fab_His Heavy chain

<400>  10

Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Lys Gln Ser His Gly Lys Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  11
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13963 7G3_ H1.109_L1_Fab_His Light chain

<400>  11

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Ser 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  12
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13965 7G3_H1.107_L1.57_Fab_His Heavy chain

<400>  12

Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Arg Gln Ala Pro Gly Gln Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  13
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13965 7G3_H1.107_L1.57_Fab_His Light chain

<400>  13

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Thr 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  14
<211>  225
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13967 7G3_H1.109_L1.57_Fab_His Heavy chain

<400>  14

Gln Val Gln Leu Gln Gln Ser Gly Ala Glu Val Lys Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Val Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Lys Gln Ser His Gly Lys Ser Leu Glu Trp Met 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Thr Ser Thr Ala Tyr 
65                  70                  75                  80  


Met Glu Leu Ser Ser Leu Arg Ser Glu Asp Thr Ala Val Tyr Tyr Cys 
                85                  90                  95      


Ala Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Gly 
    210                 215                 220                 


Ser 
225 


<210>  15
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13967 7G3_H1.109_L1.57_Fab_His Light chain

<400>  15

Asp Phe Val Met Thr Gln Ser Pro Asp Ser Leu Ala Val Ser Leu Gly 
1               5                   10                  15      


Glu Arg Ala Thr Ile Asn Cys Lys Ser Ser Gln Ser Leu Leu Asn Thr 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Gln Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Leu Gln Ala Glu Asp Val Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


<210>  16
<211>  449
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13928 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Heavy Chain 1

<400>  16

Glu Val Gln Leu Gln Gln Ser Gly Pro Glu Leu Val Lys Pro Gly Ala 
1               5                   10                  15      


Ser Val Lys Met Ser Cys Lys Ala Ser Gly Tyr Thr Phe Thr Asp Tyr 
            20                  25                  30          


Tyr Met Lys Trp Val Lys Gln Ser His Gly Lys Ser Leu Glu Trp Ile 
        35                  40                  45              


Gly Asp Ile Ile Pro Ser Asn Gly Ala Thr Phe Tyr Asn Gln Lys Phe 
    50                  55                  60                  


Lys Gly Lys Ala Thr Leu Thr Val Asp Arg Ser Ser Ser Thr Ala Tyr 
65                  70                  75                  80  


Met His Leu Asn Ser Leu Thr Ser Glu Asp Ser Ala Val Tyr Tyr Cys 
                85                  90                  95      


Thr Arg Ser His Leu Leu Arg Ala Ser Trp Phe Ala Tyr Trp Gly Gln 
            100                 105                 110         


Gly Thr Leu Val Thr Val Ser Ala Ala Ser Thr Lys Gly Pro Ser Val 
        115                 120                 125             


Phe Pro Leu Ala Pro Ser Ser Lys Ser Thr Ser Gly Gly Thr Ala Ala 
    130                 135                 140                 


Leu Gly Cys Leu Val Lys Asp Tyr Phe Pro Glu Pro Val Thr Val Ser 
145                 150                 155                 160 


Trp Asn Ser Gly Ala Leu Thr Ser Gly Val His Thr Phe Pro Ala Val 
                165                 170                 175     


Leu Gln Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val Thr Val Pro 
            180                 185                 190         


Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val Asn His Lys 
        195                 200                 205             


Pro Ser Asp Thr Lys Val Asp Lys Lys Val Glu Pro Lys Ser Cys Asp 
    210                 215                 220                 


Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Pro Val Ala Gly Pro 
225                 230                 235                 240 


Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr Leu Met Ile Ser 
                245                 250                 255     


Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val Lys His Glu Asp 
            260                 265                 270         


Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val Glu Val His Asn 
        275                 280                 285             


Ala Lys Thr Lys Pro Arg Glu Glu Glu Tyr Asn Ser Thr Tyr Arg Val 
    290                 295                 300                 


Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu Asn Gly Lys Glu 
305                 310                 315                 320 


Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala Pro Ile Glu Lys 
                325                 330                 335     


Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro Gln Val Tyr Thr 
            340                 345                 350         


Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn Gln Val Ser Leu Thr 
        355                 360                 365             


Cys Asp Val Ser Gly Phe Tyr Pro Ser Asp Ile Ala Val Glu Trp Glu 
    370                 375                 380                 


Ser Asp Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr Pro Pro Val Leu 
385                 390                 395                 400 


Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu Thr Val Asp Lys 
                405                 410                 415     


Ser Arg Trp Glu Gln Gly Asp Val Phe Ser Cys Ser Val Met His Glu 
            420                 425                 430         


Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser Leu Ser Pro Gly 
        435                 440                 445             


Lys 
    


<210>  17
<211>  485
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13928 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Heavy Chain 2

<400>  17

Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu Val Gln Pro Gly Gly 
1               5                   10                  15      


Ser Leu Arg Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe Ser Thr Tyr 
            20                  25                  30          


Ala Met Asn Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val 
        35                  40                  45              


Gly Arg Ile Arg Ser Lys Tyr Asn Asn Tyr Ala Thr Tyr Tyr Ala Asp 
    50                  55                  60                  


Ser Val Lys Gly Arg Phe Thr Ile Ser Arg Asp Asp Ser Lys Asn Thr 
65                  70                  75                  80  


Leu Tyr Leu Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr 
                85                  90                  95      


Tyr Cys Val Arg His Gly Asn Phe Gly Asp Ser Tyr Val Ser Trp Phe 
            100                 105                 110         


Ala Tyr Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ser Gly Lys Pro 
        115                 120                 125             


Gly Ser Gly Lys Pro Gly Ser Gly Lys Pro Gly Ser Gly Lys Pro Gly 
    130                 135                 140                 


Ser Gln Ala Val Val Thr Gln Glu Pro Ser Leu Thr Val Ser Pro Gly 
145                 150                 155                 160 


Gly Thr Val Thr Leu Thr Cys Gly Ser Ser Thr Gly Ala Val Thr Thr 
                165                 170                 175     


Ser Asn Tyr Ala Asn Trp Val Gln Gln Lys Pro Gly Lys Ser Pro Arg 
            180                 185                 190         


Gly Leu Ile Gly Gly Thr Asn Lys Arg Ala Pro Gly Val Pro Ala Arg 
        195                 200                 205             


Phe Ser Gly Ser Leu Leu Gly Gly Lys Ala Ala Leu Thr Ile Ser Gly 
    210                 215                 220                 


Ala Gln Pro Glu Asp Glu Ala Asp Tyr Tyr Cys Ala Leu Trp Tyr Ser 
225                 230                 235                 240 


Asn His Trp Val Phe Gly Gly Gly Thr Lys Leu Thr Val Leu Glu Pro 
                245                 250                 255     


Lys Ser Ser Asp Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Pro 
            260                 265                 270         


Val Ala Gly Pro Ser Val Phe Leu Phe Pro Pro Lys Pro Lys Asp Thr 
        275                 280                 285             


Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys Val Val Val Asp Val 
    290                 295                 300                 


Lys His Glu Asp Pro Glu Val Lys Phe Asn Trp Tyr Val Asp Gly Val 
305                 310                 315                 320 


Glu Val His Asn Ala Lys Thr Lys Pro Arg Glu Glu Gln Tyr Asn Ser 
                325                 330                 335     


Thr Tyr Arg Val Val Ser Val Leu Thr Val Leu His Gln Asp Trp Leu 
            340                 345                 350         


Asn Gly Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala 
        355                 360                 365             


Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro 
    370                 375                 380                 


Gln Val Tyr Thr Leu Pro Pro Ser Arg Glu Gln Met Thr Lys Asn Gln 
385                 390                 395                 400 


Val Lys Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser Asp Ile Ala 
                405                 410                 415     


Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn Asn Tyr Lys Thr Thr 
            420                 425                 430         


Pro Pro Val Leu Asp Ser Asp Gly Ser Phe Phe Leu Tyr Ser Lys Leu 
        435                 440                 445             


Thr Val Asp Lys Ser Arg Trp Gln Gln Gly Asn Val Phe Ser Cys Ser 
    450                 455                 460                 


Val Met His Glu Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser 
465                 470                 475                 480 


Leu Ser Pro Gly Lys 
                485 


<210>  18
<211>  220
<212>  PRT
<213>  Artificial Sequence

<220>
<223>  XENP13928 Anti-CD123 x Anti-CD3 Fab-scFv-Fc Light Chain

<400>  18

Asp Phe Val Met Thr Gln Ser Pro Ser Ser Leu Thr Val Thr Ala Gly 
1               5                   10                  15      


Glu Lys Val Thr Met Ser Cys Lys Ser Ser Gln Ser Leu Leu Asn Ser 
            20                  25                  30          


Gly Asn Gln Lys Asn Tyr Leu Thr Trp Tyr Leu Gln Lys Pro Gly Gln 
        35                  40                  45              


Pro Pro Lys Leu Leu Ile Tyr Trp Ala Ser Thr Arg Glu Ser Gly Val 
    50                  55                  60                  


Pro Asp Arg Phe Thr Gly Ser Gly Ser Gly Thr Asp Phe Thr Leu Thr 
65                  70                  75                  80  


Ile Ser Ser Val Gln Ala Glu Asp Leu Ala Val Tyr Tyr Cys Gln Asn 
                85                  90                  95      


Asp Tyr Ser Tyr Pro Tyr Thr Phe Gly Gly Gly Thr Lys Leu Glu Ile 
            100                 105                 110         


Lys Arg Thr Val Ala Ala Pro Ser Val Phe Ile Phe Pro Pro Ser Asp 
        115                 120                 125             


Glu Gln Leu Lys Ser Gly Thr Ala Ser Val Val Cys Leu Leu Asn Asn 
    130                 135                 140                 


Phe Tyr Pro Arg Glu Ala Lys Val Gln Trp Lys Val Asp Asn Ala Leu 
145                 150                 155                 160 


Gln Ser Gly Asn Ser Gln Glu Ser Val Thr Glu Gln Asp Ser Lys Asp 
                165                 170                 175     


Ser Thr Tyr Ser Leu Ser Ser Thr Leu Thr Leu Ser Lys Ala Asp Tyr 
            180                 185                 190         


Glu Lys His Lys Val Tyr Ala Cys Glu Val Thr His Gln Gly Leu Ser 
        195                 200                 205             


Ser Pro Val Thr Lys Ser Phe Asn Arg Gly Glu Cys 
    210                 215                 220 


