Frank Feleppa

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Basal-like breast cancers arising in women carrying mutations in the BRCA1 gene, encoding the tumor suppressor protein BRCA1, are thought to develop from the mammary stem cell. To explore early cellular changes that occur in BRCA1 mutation carriers, we have prospectively isolated distinct epithelial subpopulations from normal mammary tissue and(More)
PURPOSE To assess the concordance of breast cancer immunohistochemical receptor assays on core biopsy and surgical specimens. PATIENTS AND METHODS We identified 100 patients whose core biopsy and definitive surgical specimens were processed in our hospital. New sections, with core and surgical specimens on the same slides, were stained for estrogen(More)
Overexpression of the prosurvival protein BCL-2 is common in breast cancer. Here we have explored its role as a potential therapeutic target in this disease. BCL-2, its anti-apoptotic relatives MCL-1 and BCL-XL, and the proapoptotic BH3-only ligand BIM were found to be coexpressed at relatively high levels in a substantial proportion of heterogeneous breast(More)
Plasma cell microaggregates detected by CD138 immunohistology were demonstrated in 22% of patients achieving morphologic remission 3 months after high-dose therapy for myeloma. Microaggregates were predictive of earlier disease progression, indicating that immunohistology may represent a useful tool in the assessment of minimal disease in patients after(More)
In an attempt to identify antigens expressed during breast differentiation, three murine monoclonal antibodies, CIBr2, CIBr7, and CIBr18, were produced against the human pleomorphic breast carcinoma cell line PMC42. All three monoclonal antibodies reacted with previously undescribed antigenic determinants on the PMC42 cell line. Antibody CIBr18 reacted only(More)
PURPOSE Respiratory distress syndrome (RDS) is the most common cause of respiratory failure in preterm neonates, whose lungs are often immature. The diagnosis and follow-up are based on clinical and radiographic findings. Due to the problem of air artifacts, ultrasonography (US) is not used routinely in the diagnosis of lung diseases. However, when the(More)
Results are presented of a study comparing cerbB2 (neu or Her2) expression as assessed immunohistochemically in breast neoplasia using a panel of 6 commercially available antibodies. The antibodies were examined utilizing conventional formalin fixed paraffin embedded tissue, and compared with molecular analysis of gene amplification. The aim was to(More)
This case is of an unusual florid reactive CD4+ T Cell lymphocytosis involving lymph node (LN) and overshadowing residual B chronic lymphocytic leukemia (CLL). A 65 year old female with a 9 year history of untreated B-CLL presented with weight loss, splenomegaly and lymphadenopathy. B-CLL was confirmed on the basis of peripheral blood lymphocytosis, bone(More)
OBJECTIVE The isocitrate dehydrogenase 1 (IDH1) R132H mutation is the most common mutation in World Health Organization (WHO) grade II gliomas, reported to be expressed in 70-80%, but only 5-10% of high grade gliomas. Low grade tumors, especially the protoplasmic subtype, have the highest incidence of tumor associated epilepsy (TAE). The IDH1 mutation leads(More)
Impairment of apoptosis is a hallmark of cancer and can result in resistance to chemotherapy. Tumour resistance to apoptosis is frequently acquired through deregulated expression of BCL-2 family members or inactivation of the p53 tumour suppressor pathway. Over-expression of the pro-survival protein BCL-2 is common in breast cancer (where it is readily(More)