We finally discovered the 'missing piece' that causes a mysterious form of puberty-blocking disease.
April 15, 2026
Original Paper
Inactivating PLEKHA6 Mutations Cause Idiopathic Hypogonadotropic Hypogonadism Through Impaired Kisspeptin Secretion
medRxiv · 10.64898/2026.04.10.26349358
The Takeaway
For about half of all people who suffer from a condition that prevents them from starting puberty, doctors had no idea what the cause was. This study just identified a new gene, PLEKHA6, which is responsible for secreting the master 'puberty hormone' kisspeptin. When this gene is broken, the brain simply never sends the signal to start developing. This is the first time we've found the actual regulator for this hormone's release, providing an answer for thousands of 'unknown' cases. It’s a huge relief for patients who finally have a concrete molecular explanation for their condition. This discovery could lead to brand-new treatments for hormone disorders and infertility.
From the abstract
PurposeIdiopathic hypogonadotropic hypogonadism (IHH) is characterized by impaired reproductive maturation, and approximately half of all cases lack an identified genetic cause. We investigated the genetic basis of IHH in two large cohorts to identify novel disease-causing genes. MethodsWe analyzed exome and genome sequencing data from 1,822 patients with IHH from two independent cohorts. Rare variants were filtered using pedigree-informed inheritance models. PLEKHA6 expression in the postmorte