Abstract
Many genomic mutations have been identified to be related to the metastasis of malignancies from various primary sites. In this study, we attempted to identify the loss of heterozygosity (LOH) that might be involved in metastasis of breast ductal carcinoma (BDC) and papillary thyroid carcinoma (PTC). We retrieved 14 BDC cases with metastasis and 19 BDC cases without metastasis as well as 12 PTC cases with metastasis and 14 PTC cases without metastasis. Analysis of 13 polymorphic microsatellite repeat markers targeting 1p34-36, 3p24-26, 9p21, 10q23, 17p13, 17q21, 21q22, and 22q13 was performed on DNA isolated from primary tumors. The results showed that LOH at 17p13 and 22q13 was shared by both BDC and PTC for metastasis. More detailed studies to identified genes in these shared loci of LOH may provide further insight into the molecular mechanisms underlying metastases in these 2 tumor types, and possibly other malignancies as well.
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