Younger age-at-diagnosis for familial malignant testicular germ cell tumor

Phuong L. Mai, Bingshu E. Chen, Kathy Tucker, Michael Friedlander, Kelly Anne Phillips, David Hogg, Michael A.S. Jewett, Istvan Bodrogi, Lajos Geczi, Edith Olah, Ketil Heimdal, Sophie D. Fosså, Katherine L. Nathanson, Larissa Korde, Douglas F. Easton, Darshna Dudakia, Robert Huddart, Michael R. Stratton, D. Timothy Bishop, Elizabeth A. RapleyMark H. Greene

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12 Citations (Scopus)


One of the clinical hallmarks of hereditary cancer susceptibility disorders is a younger-than-usual age at diagnosis. Familial aggregation of testicular germ cell tumor (TGCT) has been reported, but data on whether familial TGCT cases are diagnosed at an earlier age are inconclusive. Here we compared the age at diagnosis of familial TGCT cases with that of population cases in several countries. Familial TGCT is defined as affected individuals from families with ≥2 cases of TGCT. Age at diagnosis of familial cases from the United States, Canada, United Kingdom, Australia and New Zealand, Norway, and Hungary was compared to cases identified in population-based cancer registries from the respective country, using the generalized estimation equation method. Age at diagnosis was statistically significantly younger for familial TGCT cases from North America (P = 0.024), the United Kingdom (P < 0.0001), and Australia and New Zealand (P = 0.0033) compared with population cases. When stratified by histology, the difference in age at diagnosis distribution between familial and population cases was observed for seminoma cases from North America (P = 0.002) and the United Kingdom (P < 0.0001) and non-seminoma cases from the United Kingdom (P = 0.029) and Australia and New Zealand (P = 0.0023). In summary, we found that the age at diagnosis for familial TGCT cases is, on the average, 2-3 years younger than that for the population cases in North America, United Kingdom, and Australia and New Zealand. The younger age at diagnosis might be suggestive of a genetic basis for familial TGCT.

Original languageEnglish
Pages (from-to)451-456
Number of pages6
JournalFamilial Cancer
Issue number4
Publication statusPublished - Dec 1 2009


  • Age at diagnosis
  • Familial
  • Non-seminoma
  • Population-based testicular cancer
  • Seminoma
  • Testicular germ cell tumor

ASJC Scopus subject areas

  • Genetics
  • Oncology
  • Genetics(clinical)
  • Cancer Research

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    Mai, P. L., Chen, B. E., Tucker, K., Friedlander, M., Phillips, K. A., Hogg, D., Jewett, M. A. S., Bodrogi, I., Geczi, L., Olah, E., Heimdal, K., Fosså, S. D., Nathanson, K. L., Korde, L., Easton, D. F., Dudakia, D., Huddart, R., Stratton, M. R., Bishop, D. T., ... Greene, M. H. (2009). Younger age-at-diagnosis for familial malignant testicular germ cell tumor. Familial Cancer, 8(4), 451-456.