Multispecific antibodies having specificity for ror1 and cd3

A multispecific antibody comprising:

• a) one or two binding domains, which specifically bind to the extracellular domain of ROR1 (ROR1-BDs);
• and
• b) one binding domain, which specifically binds to CD3 (CD3-BD);
• wherein
• the multispecific antibody does not comprises an immunoglobulin Fc region;
• said ROR1-BDs comprise independently from each other a set of CDR sequences selected from the set consisting of
• the HCDR1 sequence of SEQ ID NO:
• 1,
• the HCDR2 sequence of SEQ ID NO:
• 2,
• the HCDR3 sequence of SEQ ID NO:
• 3,
• the LCDR1 sequence of SEQ ID NO:
• 4,
• the LCDR2 sequence of SEQ ID NO:
• 5, and
• the LCDR3 sequence of SEQ ID NO:
• 6;
• and/or the set consisting of
• the HCDR1 sequence of SEQ ID NO:
• 13 or 14,
• the HCDR2 sequence of SEQ ID NO:
• 15,
• the HCDR3 sequence of SEQ ID NO:
• 16,
• the LCDR1 sequence of SEQ ID NO:
• 17,
• the LCDR2 sequence of SEQ ID NO:
• 18, and
• the LCDR3 sequence of SEQ ID NO:
• 19;
• said CD3-BD comprises the set of CDR sequences consisting of
• the HCDR1 sequence of SEQ ID NO:
• 30,
• the HCDR2 sequence of SEQ ID NO:
• 31,
• the HCDR3 sequence of SEQ ID NO:
• 32,
• the LCDR1 sequence of SEQ ID NO:
• 33,
• the LCDR2 sequence of SEQ ID NO:
• 34, and
• the LCDR3 sequence of SEQ ID NO:
• 35.