V. Marci et al., GASTROINTESTINAL STROMAL TUMOR, UNCOMMITTED TYPE, WITH MONOSOMY-14 AND MONOSOMY-22 AS THE ONLY CHROMOSOMAL-ABNORMALITIES, Cancer genetics and cytogenetics, 102(2), 1998, pp. 135-138
Karyotypic analysis of a gastric stromal tumor with the histologic and
immunohistochemical features of a malignant, uncommitted lesion revea
led clonal monosomies of chromosomes 14 and 22. Such changes, together
with loss of chromosomes 15 and 18, as well as structural rearrangeme
nts involving chromosome 1, have been previously reported in gastroint
estinal stromal tumors with smooth muscle differentiation. We suggest
that monosomies of chromosomes 14 and 22 are early events in the malig
nant transformation of the mesenchymal cell-originating gastrointestin
al stromal tumors. (C) Elsevier Science Inc., 1998.