RT Journal A1 Haerer AF, Jackson JF, Evers CG T1 ATaxia-telangiectasia with gastric adenocarcinoma JF JAMA JO JAMA YR 1969 FD December 8 VO 210 IS 10 SP 1884 OP 1887 DO 10.1001/jama.1969.03160360030006 UL http://dx.doi.org/10.1001/jama.1969.03160360030006 AB This communication concerns a large Negro sibship of which five of 12 members had ataxia-telangiectasia. Two affected sisters also had mucinous adenocarcinoma of the stomach in the second decade of life. More detailed studies in one member revealed decreased IgA levels, decreased lymphoblastic transformation index, chromosomal abnormalities, and abnormal thymic and lymphoid tissues, in addition to the typical clinical features of this syndrome. The accepted predisposition to development of lymphoid neoplasms in ataxia-telangiectasia must be extended to include other malignant neoplasms, in view of the occurrence of histologically similar gastric adenocarcinomas in two affected siblings.