Clinical evaluation of two weekly dose schedules of 'IC-140'. 4-N, N-bis (2-Chloroethyl) amino phenyl N (P-carboxyphenyl) carbamate, in the treatmentment of solid tumors 1,2.

53 patients with intractable malignant diseases that were treated with a new alkylating agent, 4-N,N-bis (2-chloroethyl) amino phenyl N (P-carboxyphenyl) carbanate, also knows as 'IC-140' were evaluated. The records of an additional 41 patients entered on this study could not be assessed from the standpoint of toxicity. At the dose level of 150 mg/m2/week, severe leukopenia (less than 2,000) and thrombocytopenia ( less than 75,000) were encountered in 23 of 34 patients. On the other hand, at the 100 mg/m2/week dose level, the severe toxicity was reduced to 8 out of 19 patients. Tumor response was evaluated in 43 patients. The overall response was 23% (29% at the 150 mg/m2, 13% at the 100 mg/m2) and the duration of the response varied from 3 to 32 weeks with a mean duration of 13 weeks. Responses were noted in patients with ovarian, renal, lung, hepatic, breast carcinomas and lymphosarcoma.