Abstract
A germline alteration in the PTEN gene causes a spectrum of disorders conceptualized as PTEN hamartoma tumor syndrome (PHTS), which show high risk of tumor development and a highly variable and complex phenotype. The diagnosis of PHTS is established in a proband by identification of a heterozygous germline PTEN pathogenic variant on molecular genetic testing. In this study, to understand more PTEN-associated clinical phenotype and PHTS in a Japanese population, we extracted 128 germline PTEN rare variants from 113,535 adult Japanese registered in Biobank Japan (BBJ), and categorized 29 pathogenic/likely pathogenic variants in 30 individuals (0.0264%) with ClinVar classifications and ACMG/AMP guideline for PTEN. We examined case-control association in 75,238 patients with various types of cancer and 38,297 non-cancer controls, and identified that PTEN pathogenic variants (PVs) were significantly associated with endometrial cancer (OR = 35.7, P = 9.73E-04) and marginally associated with female breast cancer (OR = 19.5, P = 3.92E-03), especially at young onset and with multiple cancers. We observed that among the 127 disease phenotypes the PTEN PV carriers had uterine fibroid, goiter, ovarian cyst, and epilepsy, which is consistent with PTEN-related phenotypes. We also found that weight/height were significantly higher in adult female carriers with PTEN PV (P = 3.1E-04 and P = 0.0014, respectively), which is consistent with overgrowth syndrome of PHTS. Our results indicate the phenotypical features associated with PTEN PVs in a Japanese population, especially female, and can contribute to the screening for PTEN variants and its associated several phenotypes.
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Acknowledgements
This work was supported by RIKEN Junior Research Associate Program (Y.K.). We thank the individuals who participated BioBank Japan. We also acknowledge the staff of the Laboratory for Genotyping Development in RIKEN, the RIKEN-IMS genome platform, and the BioBank Japan project. We are deeply grateful to the late Professor Charis Eng in Cleveland Clinic for her valuable advice on this work and her great contribution to PTEN research. Her memory continues to inspire.
Funding
This work was supported by AMED under Grant Numbers JP19kk0305010, JP20ck0106402, JP19cm0106605, and 20ck0106553.
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Y.M.O. and H.N. conceived and designed the study. Y.M.O., Y.M.U., Y.K., and K.M. managed the materials in B.B.J., M.E., Y.I., M.Y., and Y.M.O. produced sequence data, and Y.I. and Y.U. performed data curation. Y.K. performed data analysis and statistical tests. S.S., T.J., and Y.I. assisted the variant annotation and case-control analysis. K.S., T.K., T.Y, and K.S. assisted with the data interpretation. K.S., T.K., and Y.Mo. obtained the funding. Y.K. and H.N. wrote the initial draft of the manuscript. N.M., Y.Mo., and H.N. supervised the study. All authors reviewed this manuscript.
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Kanazashi, Y., Usui, Y., Iwasaki, Y. et al. Cancer and disease profiles for PTEN pathogenic variants in Japanese population. J Hum Genet 70, 135–140 (2025). https://doi.org/10.1038/s10038-024-01311-z
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DOI: https://doi.org/10.1038/s10038-024-01311-z


