A Chinese pedigree with colorectal cancers and acute myeloid leukemia. Solid symbols indicate affected individuals. Open symbols indicate unaffected individuals. The arrow indicates the proband, and slashes indicate deceased persons. I-1, lung cancer. II-1, rectal cancer. II-2, rectal cancer. II-3, colon cancer. III-2 and III-3, acute myeloid leukemia, M2 and M1.