Expanding the phenotype and genotype spectrum of TAOK1 neurodevelopmental disorder and delineating TAOK2 neurodevelopmental disorder

Nour Elkhateeb*, Renarta Crookes, Michael Spiller, Lisa Pavinato, Flavia Palermo, Alfredo Brusco, Michael Parker, Soo Mi Park, Ariana Costa Mendes, Jorge M. Saraiva, Trine Bjørg Hammer, Lusine Nazaryan-Petersen, Tahsin Stefan Barakat, Martina Wilke, Elizabeth Bhoj, Rebecca C. Ahrens-Nicklas, Dong Li, Tomoki Nomakuchi, Eva H. Brilstra, David HuntDiana Johnson, Sahar Mansour, Kathryn Oprych, Sarju G. Mehta, Konrad Platzer, Franziska Schnabel, Henriette Kiep, Helene Faust, Gillian Prinzing, Kimberly Wiltrout, Jessica A. Radley, Alvaro H. Serrano Russi, Isis Atallah, Belinda Campos-Xavier, David J. Amor, Angela T. Morgan, Christina Fagerberg, Ulla A. Andersen, Charlotte B. Andersen, Emilia K. Bijlsma, Lynne M. Bird, Sureni V. Mullegama, Andrew Green, Bertrand Isidor, Benjamin Cogné, Janna Kenny, Sally A. Lynch, Shauna Quin, Karen Low, Theresia Herget, Fanny Kortüm, Rebecca J. Levy, Jennifer L. Morrison, Patricia G. Wheeler, Tara Chandra Narumanch, Kristina Peron, Nicole Matthews, Jillian Uhlman, Lauren Bell, Lewis Pang, Ingrid Scurr, Rebecca S. Belles, Bonnie Anne Salbert, Gerald Bradley Schaefer, Sarah Green, Andrea Ros, Agustí Rodríguez-Palmero, Tanja Višnjar, Karin Writzl, Pradeep C. Vasudevan, Meena Balasubramanian*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Purpose: 

The thousand and one kinase (TAOK) proteins are a group of serine/threonine-protein kinases involved in signaling pathways, cytoskeleton regulation, and neuronal development. TAOK1 variants are associated with a neurmethododevelopmental disorder (NDD) characterized by distinctive facial features, hypotonia, and feeding difficulties. TAOK2 variants have been reported to be associated with autism and early-onset obesity. However, a distinct TAOK2-NDD has not yet been delineated. 

Methods: 

We retrospectively studied the clinical and genetic data of individuals recruited from several centers with TAOK1 and TAOK2 variants that were detected through exome and genome sequencing. 

Results: 

We report 50 individuals with TAOK1 variants with associated phenotypes, including neurodevelopmental abnormalities (100%), macrocephaly (83%), and hypotonia (58%). We report male genital anomalies and hypoglycemia as novel phenotypes. Thirty-seven unique TAOK1 variants were identified. Most of the missense variants clustered in the protein kinase domain at residues that are intolerant to missense variation. We report 10 patients with TAOK2 variants with associated phenotypes, including neurodevelopmental abnormalities (100%), macrocephaly (75%), autism (75%), and obesity (70%). 

Conclusion: 

We describe the largest cohort of TAOK1-NDD to date, to our knowledge, expanding its phenotype and genotype spectrum with 30 novel variants. We delineated the phenotype of a novel TAOK2-NDD associated with neurodevelopmental abnormalities, autism, macrocephaly, and obesity.

Original languageEnglish
Article number101348
JournalGenetics in Medicine
Volume27
Issue number3
DOIs
Publication statusPublished - Mar 2025

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