Multifocal anaplastic astrocytoma in a patient with hereditary colorectal cancer, transcobalamin II deficiency, agenesis of the corpus callosum, mental retardation, and inherited PMS2 mutation.
We describe the case of a patient with transcobalamin II deficiency, hypogammaglobulinemia, absent corpus callosum, and mental retardation who presented at an early age with colorectal cancer and multifocal anaplastic astrocytoma. He was found to have a possible germline mutation of the PMS2 gene, as evidenced by absent protein expression in both normal and tumor tissues. His parents were found to be carriers of a nonsense mutation of the PMS2 gene.
Gururangan, S; Frankel, W; Broaddus, R; Clendenning, M; Senter, L; McDonald, M; Eastwood, J; Reardon, D; Vredenburgh, J; Quinn, J; Friedman, HS
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