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Dyspnea During Thalidomide Treatment for Advanced Ovarian Cancer

Assistant Professor, Women & Infants' Hospital/Brown University Program in Women's Oncology, Women & Infants' Hospital, Providence, RI

Don S Dizon, MD

Assistant Professor, Women & Infants' Hospital/Brown University Program in Women's Oncology, Women & Infants' Hospital

Reprints: Dr. Gordinier, Women & Infants' Hospital, 101 Dudley St., Providence, RI 02905-2499, fax 401/453-7529, mgordinier{at}wihri.org

OBJECTIVE: To detail the dyspnea encountered in women receiving thalidomide as therapy for advanced ovarian cancer.

CASE SUMMARIES: Eight of 18 (44%) patients with recurrent ovarian cancer developed dyspnea while receiving thalidomide 200 mg daily as part of a prospective Phase II study. Dyspnea was evaluated with pulse oximetry, chest X-ray and, if indicated, spiral computed tomography scan. Four patients had abnormal chest X-ray findings (1 pleural effusion, 1 pneumonia, 2 mild congestive heart failure), and one of these patients also had a pulmonary embolus. The other 4 patients had no objective test findings to explain their dyspnea. Five patients had resolution of symptoms when thalidomide was discontinued and, when the drug was resumed at a 50% dose reduction, experienced no further shortness of breath.

DISCUSSION: While dyspnea in association with thalidomide has not previously been reported as a common adverse event, it was a frequent complaint of patients receiving this drug as part of a Phase II study. Comorbid conditions causing dyspnea were evaluated since they are common in this patient population; however, half of our patients had no objective evidence of such conditions. The Naranjo probability scale indicated a probable relationship between dyspnea and thalidomide therapy in the patients with no objective evidence of comorbidity. We advocate discontinuation of thalidomide until symptoms have resolved, at which time reintroduction of thalidomide at a reduced dose may be considered.

CONCLUSIONS: Patients receiving thalidomide may develop dyspnea as an adverse effect of the drug. In selected patients, thalidomide may be safely reintroduced once symptoms resolve.

Key Words: dyspnea, ovarian cancer, thalidomide

Published Online, April 5, 2005. www.theannals.com, DOI 10.1345/aph.1E608

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