Phase I Data on SAHA, a Histone Deacetylase Inhibitor

TARRYTOWN, New York—Aton Pharma, Inc and its collaborators presented phase I data on its oral histone deacetylase inhibitor SAHA (suberoylanilide hydroxamic acid) at the 14th Annual EORTC/NCI/AACR symposium, held in Frankfurt, Germany. The trial of patients with refractory solid tumors, lymphomas, and leukemias, being conducted with researchers at Memorial Sloan-Ket-tering Cancer Center, defined a safe daily oral dosing regimen.

Evidence of antitumor activity was also observed. Of the 28 patients with solid tumors, one (larynx cancer) had a partial response, two (renal cell cancer and transitional cell cancer) had reduction in measurable disease, and one (papillary thyroid cancer) had stable disease for more than 2 months.