iScience (Aug 2025)

Adaptive PRKAA1 variant in Andeans is associated with improved ventilation and sleep phenotypes

  • Elijah S. Lawrence,
  • Wanjun Gu,
  • Mitchell C. Kong,
  • Santiago Fassardi,
  • Cecilia Anza-Ramirez,
  • Esteban A. Moya,
  • Erica C. Heinrich,
  • James J. Yu,
  • Jeremy E. Orr,
  • Steven Y. Cao,
  • Ana Sanchez-Azofra,
  • Amy M. Cole,
  • James E. Hall,
  • Andrew Lin,
  • Pamala N. DeYoung,
  • Gustavo Vizcardo-Galindo,
  • Jose-Luis Macarlupu,
  • Rómulo Figueroa-Mujíca,
  • Daniela Bermudez,
  • Noemi Corante,
  • Gianpiero L. Cavalleri,
  • Eduardo Gaio,
  • A. Mark Evans,
  • Frank L. Powell,
  • Atul Malhotra,
  • Rany M. Salem,
  • Francisco C. Villafuerte,
  • Tatum S. Simonson

Journal volume & issue
Vol. 28, no. 8
p. 112911

Abstract

Read online

Summary: Highland groups have adapted to the extreme selective pressures of hypoxia at high altitude via alterations in the oxygen-transport cascade. PRKAA1, which encodes the catalytic subunit of the AMP-activated protein kinase (AMPK), is a notable target of natural selection in Andeans and has been associated with protective fetal phenotypes in this population. AMPK is a universal cellular energy sensor involved in a multitude of physiological processes, including ventilation and the hypoxic ventilatory response (HVR) in animal models. We localized a signal of positive selection and identified a regulatory promoter variant (rs10035235, C>T) of adaptive significance that is associated with ventilatory and sleep phenotypes in male Andean highlanders as well as sleep phenotypes in publicly available lowland cohorts. This work identifies a functional, adaptive, and likely pleiotropic regulatory variant in PRKAA1 in Andeans that may accentuate hypoxia-induced ventilation and provide protection from sleep-disordered breathing in both high- and lowland populations.

Keywords