IGF-1R x IGF-1 x FOLR1

The primary objective of this study is to determine the safety and tolerability of utilizing the insulin-like growth factor-1-methotrexate conjugate, 765IGF-MTX for the treatment of advanced, previously treated myelodysplastic syndrome (MDS), chronic myelomonocytic leukemia (CMML) and oligoblastic acute myelogenous leukemia (oligoblastic AML or O-AML), including determining the maximum tolerated dose (MTD).

This phase I dose escalation study will evaluate IGF-Methotrexate conjugate (765IGF-MTX) in patients with advanced, previously treated tumors. 765IGF-MTX is administered as an IV infusion over 1 hour on days 1, 8 and 15 of a 28 day cycle. Treatment continues until disease progression, unacceptable toxicity, or patient refusal. Assessment of response will be confirmed with imaging studies performed at the end of cycle 2 +/- 7 days, and every 2 weeks thereafter.