MDS and secondary AML: an evolutionary perspective.
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Biomedical subjects
Publications and source records attributed to M W Audeh.
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Carbetimer (carboxyimamidate) was administered at a dose of 6,500 mg/m2/day intravenously for 5 consecutive days to 14 patients with measurable metastatic or recurrent colorectal cancer in a single institution phase II study of the Northern California Oncology Group. A total of 38 cycles of therapy were administered; nine patients completed at least three cycles of treatment. No partial or complete responses were observed. One patient did have a greater than 50% response in the liver while developing new retroperitoneal lymphadenopathy and is considered a nonresponder. Carbetimer was well tolerated with elevations of calcium from 10.2 to 12.5 mg/dl in nine patients, prolongation of prothrombin time and partial thromboplastin time in 14 patients, proteinuria in 10 patients, dizziness in six patients, nausea in two patients, and venous pain during infusion in three patients. Myelosuppression was not observed. Carbetimer at this dose and schedule is inactive in the treatment of colorectal cancer.
Four cases of plasmacytoma (PC), six cases of multiple myeloma (MM), and nine cases of immunoblastic lymphoma (IL) of B-cell phenotype were studied with a large panel of monoclonal antibodies applied to frozen tissue sections. There were no significant differences in the immunophenotypes of plasmacytomas and multiple myelomas. However, significant immunophenotypic differences were noticed between the plasmacytoma/multiple myeloma cases (PC/MM) and the immunoblastic lymphoma specimens. The PC/MM cases characteristically stained with alpha (or gamma) and T10 and did not usually stain with mu, leukocyte common antibodies, certain B-lineage antibodies (B1, T015, 4G7, 6A4), or Ia. In contrast, IL sections usually did not stain with alpha or T10 and generally did stain with mu (or gamma), leukocyte common antibodies, B-lineage antibodies, and Ia. Ki-67, an antibody to proliferating cells, stained significantly fewer cells in PC/MM than in IL and stained significantly fewer cells that had a good clinical outcome. We conclude that although no one antibody is useful in distinguishing PC/MM from IL, the application of a panel of antibodies may be helpful in making this distinction. The prognosis may correlate with the numbers of proliferating cells as measured by reactivity with Ki-67.
Twenty-four patients over the age of 70 with small cell cancer of the lung were studied retrospectively. Ninety-two per cent of these patients had other concurrent medical disorders; 58 per cent had cardiac disease and 25 per cent had a second malignancy. The median survival of 20 treated patients was ten months, and the one-year survival was 30 per cent. Such elderly patients with multiple medical problems can benefit from combination chemotherapy.
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