Anti-CD19 antibody drug conjugates

An anti-CD19 antibody comprising:

• a heavy chain variable region comprising a CDR-H1 domain, CDR-H2 domain, and a CDR-H3 domain;
• and
• a light chain variable region comprising a CDR-L1 domain, a CDR-L2 domain, and a CDR-L3 domain, wherein
• the CDR-H1 domain comprises the amino acid sequence GFTFTTYWIN (SEQ ID NO:
• 1,
• the CDR-H2 domain comprises the amino acid sequence NIYPSDSYTNYNQKFKD (SEQ ID NO:
• 2),
• the CDR-H3 domain comprises the amino acid sequence EDYYGSSSYYAMDY (SEQ ID NO:
• 3);
• the CDR-L1 domain comprises the amino acid sequence KASQDVGTAVA (SEQ ID NO:
• 4,
• the CDR-L2 domain comprises the amino acid sequence WASTRHT (SEQ ID NO:
• 5), and
• the CDR-L3 domain comprises the amino acid sequence QQYSTYPLT (SEQ ID NO:
• 6).