Abstract
Successful treatment of endogenous Cushing disease (CD) is often followed by a period of adrenal insufficiency (AI). We performed an exploratory study on genetic factors potentially involved in the hypothalamic-pituitary-adrenal (HPA) axis recovery in patients with CD after remission. We identified 90 patients who achieved remission after surgery and had a minimum of 3 months follow-up. Variants in a selected panel of genes that were rare in the general population and predicted as damaging in silico were retrieved from whole exome sequencing analysis. We did not identify any variant with significant correlation with recovery time after adjusting for multiple comparisons. On gene-specific analysis the BAG1 gene showed a correlation with shorter duration of postsurgical AI, but both patients with BAG1 variants later experienced a recurrence. After excluding patients with recurrence, no statistical association was recorded. To conclude, we did not identify a strong genetic modifier of HPA recovery in this exploratory study.
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