4.7 Review

Novel genes and variants associated with congenital pituitary hormone deficiency in the era of next-generation sequencing

Journal

FRONTIERS IN ENDOCRINOLOGY
Volume 13, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fendo.2022.1008306

Keywords

combined pituitary hormone deficiency; hypopituitarism; next-generation sequencing; pituitary development; genetic diagnosis

Funding

  1. Japan Society for the Promotion of Science (KAKENHI) [21K16370, 21KK0149, 21K20933, 21K08555]
  2. Takeda Science Foundation
  3. National Institutes of Health [R01HD097096]

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This review provides an overview of newly reported causative genes for combined pituitary hormone deficiency (CPHD), as well as discussing novel variants of known CPHD-related genes. Clinical and basic research may help in inferring the causative genes of CPHD, and future analysis may reveal new genes related to pituitary development.
Combined pituitary hormone deficiency (CPHD) is not a rare disorder, with a frequency of approximately 1 case per 4,000 live births. However, in most cases, a genetic diagnosis is not available. Furthermore, the diagnosis is challenging because no clear correlation exists between the pituitary hormones affected and the gene(s) responsible for the disorder. Next-generation sequencing (NGS) has recently been widely used to identify novel genes that cause (or putatively cause) CPHD. This review outlines causative genes for CPHD that have been newly reported in recent years. Moreover, novel variants of known CPHD-related genes (POU1F1 and GH1 genes) that contribute to CPHD through unique mechanisms are also discussed in this review. From a clinical perspective, variants in some of the recently identified causative genes result in extra-pituitary phenotypes. Clinical research on the related symptoms and basic research on pituitary formation may help in inferring the causative gene(s) of CPHD. Future NGS analysis of a large number of CPHD cases may reveal new genes related to pituitary development. Clarifying the causative genes of CPHD may help to understand the process of pituitary development. We hope that future innovations will lead to the identification of genes responsible for CPHD and pituitary development.

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