Antineoplastons, which were firstly described by Burzynski, are naturally occurring peptides and amino acid derivatives which control neoplastic growth. We conducted a toxicological study of the Antineoplastons A-10 and AS2-1 in combination with other anticancer agents or radiation in
42 patients, 46 tumors with terminal stage cancer. ......SNIP..... The evaluation of the usefulness of the Antineoplastons in combination therapy based on the imaging findings during the course of
treatment revealed disappearance or measurable shrinkage of the tumor lasting more than one months as visualized by magnetic resonance imaging or computed tomography was seen
in 15 tumors (32.6%).
No increase in size of tumor for more than 3 months was observed in 8 (17.4%).
The mean survival time of these patients was significantly longer than that in patients with tumors showing progressive increasing (17.52 + 3.31 months vs 4.80 + 0.65 months, p < 0.005).
Antineoplaston A-10 and AS2-1 are less toxic than conventional chemotherapeutics and they were useful in maintenance therapy for cancer patients.