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作者调查了鼻咽癌聚集的两个家系并测定其EB病毒壳抗原特异性免疫球蛋白A(VCA-IgA)抗体。一个家系两代20人中有11人患癌症,其中鼻咽癌7人(6人属于9人的同胞组,另1人是他们的母亲);“颈侧肿瘤”2人;食管癌和骨肉瘤各1人。这高发癌组的上一代男性成员在妻死后再结婚,所育子女7人仅1人患“颈部肿瘤”,孙辈24人均无肿瘤,形成低发癌组。另一个家系三代37人中有6人患癌症,
The authors investigated two families of nasopharyngeal carcinomas and determined their EBV-specific immunoglobulin A (VCA-IgA) antibodies. 11 out of 20 people in a family have cancer, including 7 nasopharyngeal carcinoma (6 belong to the 9-member compatriot group and 1 is their mother); 2 patients with “neoplastic tumors”; esophageal cancer and flesh One tumor each. The previous generation of male members of the high cancer group got married after their wives died. Only 7 of the 7 children were affected by the “neck neoplasms,” and 24 of the grandchildren had no tumors and developed a low-onset cancer group. Six out of 37 people in the third generation of the family have cancer.