Eight of 35 patients with cancer receiving COL-3, a tetracycline derivative
with antiangiogenic properties, developed anemia while on treatment. All o
f these patients were enrolled on an approved Phase I clinical trial at the
National Cancer Institute, Three of these patients had bone marrow examina
tions that revealed ringed sideroblasts, This paper describes these cases.
Am. J. Hematol, 87:51-53, 2001. Published 2001 Wiley-Liss, Inc.