Prospective study of a family cancer syndrome.
D000293:Adolescent; D000328:Adult; D001943:Breast Neoplasms / Q000235:genetics; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000235:genetics*; D009378:Neoplasms, Multiple Primary / Q000235:genetics; D010375:Pedigree; D011446:Prospective Studies; D012306:Risk; D012509:Sarcoma / Q000235:genetics; D012983:Soft Tissue Neoplasms / Q000235:genetics