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Identification of different haplotypes, including the rs2505533 and rs34827976 SNPs, in relatives with MTC/HSCR or MTC alone (non-HSCR) who carry the C620R RET mutation. The observed haplotype in the HSCR/MTC patients (red) contains the region previously recognized as related to the sporadic and familial forms of HSCR (1),(2). Four SNPs within this region are only homozygous (aa) in patients with HSCR.
