Non-penetrant Xq26.3 duplication involving the invariant TAD border: clinical evidence for the VGLL1 region as the GPR101 pituitary enhancer of X-linked acrogigantism

Abstract excerpt

INTRODUCTION: X-linked acrogigantism (X-LAG; OMIM: 300942) is a rare X-linked dominant, fully penetrant form of infancy-onset pituitary gigantism caused by Xq26.3 tandem duplications involving the GPR101 gene. All previously reported X-LAG-associated duplications disrupt the integrity of the resident topologically associating domain (TAD). This creates a neo-TAD, permitting ectopic chromatin interactions between...

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