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Several chromosomal regions are found to be consistently amplified in human breast cancers. For two of these regions, 8p 12 and 10q26, we previously reported the amplification of genes encoding FGF receptors, FGFR1/FLG and FGFR2/BEK, in about 12% of breast tumors. The PLAT gene, encoding the...
Cytogenetic analysis of a squamous cell lung carcinoma revealed a near‐haploid karyotype with 27 chromosomes, in both primary cultures and an established cell line. The only chromosomes with two homologs present were chromosomes X, 5, 7, and 22. The two X chromosomes were early and late...
An embryonal rhabdomyosarcoma was analyzed cytogenetically. In primary cultures fed a serum‐containing medium, 11 clones with karyotypic abnormalities were found. One had trisomy 8 only. The other 10 clones had trisomy 8 as well as additional evolutionary changes that included trisomy for part...
Cytogenetic analysis was performed on a selected series of short‐term cultures of primary breast carcinomas from 28 patients. All patients had histopathologically confirmed malignancies, with the majority (25/28 cases) demonstrating infiltrating ductal carcinoma. All 28 cases evidenced clonal...
Fluorescence in situ hybridization (FISH) was performed on bone marrow or peripheral blood cells thought to contain a del(11)(q23q25) from four patients who had acute leukemia or myelodysplasia. Cells from all patients were shown to contain translocations that involved chromosome 6 in three of...
Parathyroid hormone‐related protein (PTHRP) is expressed in a large number of tumors and is the mediator of parathyroid hormone‐like effects seen in humoral hypercalcemia of malignancy. The gene coding for PTHRP has been localised to the short arm of chromosome 12. This is at the same region...
Cytogenetic analysis was performed on a selected series of short‐term cultures from 34 patients with documented metastatic breast carcinoma. The majority of tumor cells were hyperdiploid, with clonal structural alterations observed in 94% of patients (32/34). The most common numeric changes...
Chromosomal in situ suppression (CISS) hybridization with biotin labeled chromosome‐specific libraries was performed on short‐term cultures from five cases of non‐Hodgkin's lymphoma (NHL). The painting analysis proceeded in three stages. First‐stage CISS hybridization was done with...
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