RT PCR showed that all samples expressed HCP gene, only one missense mutation at codon 225 (AAC to AGC, Asn to Ser) within N terminal SH2 domain was found in an ALL patient.

• RT PCR显示所有标本中都有HCP基因表达 ,仅在 1例急性淋巴细胞性白血病细胞中发现一错义突变 ,发生在HCP基因氨基末端的SH2结构域 ;