Faculty Collaboration Database

Mutation-specific pathophysiological mechanisms define different neurodevelopmental disorders associated with SATB1 dysfunction. Am J Hum Genet 2021 Feb 04;108(2):346-356

Date

01/30/2021

Pubmed ID

33513338

Pubmed Central ID

PMC7895900

DOI

10.1016/j.ajhg.2021.01.007

Scopus ID

2-s2.0-85100239938 (requires institutional sign-in at Scopus site)   23 Citations

Abstract

Whereas large-scale statistical analyses can robustly identify disease-gene relationships, they do not accurately capture genotype-phenotype correlations or disease mechanisms. We use multiple lines of independent evidence to show that different variant types in a single gene, SATB1, cause clinically overlapping but distinct neurodevelopmental disorders. Clinical evaluation of 42 individuals carrying SATB1 variants identified overt genotype-phenotype relationships, associated with different pathophysiological mechanisms, established by functional assays. Missense variants in the CUT1 and CUT2 DNA-binding domains result in stronger chromatin binding, increased transcriptional repression, and a severe phenotype. In contrast, variants predicted to result in haploinsufficiency are associated with a milder clinical presentation. A similarly mild phenotype is observed for individuals with premature protein truncating variants that escape nonsense-mediated decay, which are transcriptionally active but mislocalized in the cell. Our results suggest that in-depth mutation-specific genotype-phenotype studies are essential to capture full disease complexity and to explain phenotypic variability.

Author List

den Hoed J, de Boer E, Voisin N, Dingemans AJM, Guex N, Wiel L, Nellaker C, Amudhavalli SM, Banka S, Bena FS, Ben-Zeev B, Bonagura VR, Bruel AL, Brunet T, Brunner HG, Chew HB, Chrast J, Cimbalistienė L, Coon H, DDD Study, Délot EC, Démurger F, Denommé-Pichon AS, Depienne C, Donnai D, Dyment DA, Elpeleg O, Faivre L, Gilissen C, Granger L, Haber B, Hachiya Y, Abedi YH, Hanebeck J, Hehir-Kwa JY, Horist B, Itai T, Jackson A, Jewell R, Jones KL, Joss S, Kashii H, Kato M, Kattentidt-Mouravieva AA, Kok F, Kotzaeridou U, Krishnamurthy V, Kučinskas V, Kuechler A, Lavillaureix A, Liu P, Manwaring L, Matsumoto N, Mazel B, McWalter K, Meiner V, Mikati MA, Miyatake S, Mizuguchi T, Moey LH, Mohammed S, Mor-Shaked H, Mountford H, Newbury-Ecob R, Odent S, Orec L, Osmond M, Palculict TB, Parker M, Petersen AK, Pfundt R, Preikšaitienė E, Radtke K, Ranza E, Rosenfeld JA, Santiago-Sim T, Schwager C, Sinnema M, Snijders Blok L, Spillmann RC, Stegmann APA, Thiffault I, Tran L, Vaknin-Dembinsky A, Vedovato-Dos-Santos JH, Schrier Vergano SA, Vilain E, Vitobello A, Wagner M, Waheeb A, Willing M, Zuccarelli B, Kini U, Newbury DF, Kleefstra T, Reymond A, Fisher SE, Vissers LELM

Author

Kelly Jones MD Assistant Professor in the Pediatrics department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Chromatin
Female
Genetic Association Studies
Haploinsufficiency
Humans
Male
Matrix Attachment Region Binding Proteins
Models, Molecular
Mutation
Mutation, Missense
Neurodevelopmental Disorders
Protein Binding
Protein Domains
Transcription, Genetic