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Table 4 Comparison of genetic syndromes associated with autism spectrum disorder

From: The spectrum of neurological presentation in individuals affected by TBL1XR1 gene defects

Disorder

Gene

Inheritance

ASD

Regression

Seizures

GI issues

Sleep

Behavioral issues

Systemic involvement

Unique features

Self-injury

Repetitive behaviors

TBL1XR1/Pierpont syndromea

TBL1XR1

AD

++

++

++

+++

+++

++

++

Renal and cardiac anomalies, anal malformation

Fetal fat pads, high forehead

Phelan McDermid syndrome

SHANK3

AD

++++

+++

++

++

++

++

++++

Renal and cardiac anomalies, hypothyroidism

Heat intolerance, fleshy hands, dysplastic toenails

Pitt-Hopkins syndrome

TCF4

AD

+++

–

++

++++

+

+++

++++

Paradoxical breathing pattern

Coarse facial features, overriding toes, fetal fat pads, peaked philtrum

Fragile X syndrome

FMR1

XLD

++

–

+

++

++

+++

+++

Macroorchidism cardiac anomalies

Long face, large/prominent ears, high-arched palate, and prominent jaw

Rett syndrome

MECP2

XLD

++/+++

++++

+++/+++

++

++

++/+++

++++

Paradoxical breathing pattern, vision, cardiac involvement

Stereotypic hand movement, loss of purposeful hand movement

Angelman syndrome

UBE3A

AD

+++

–

++++

++++

++++

++

+/++++

Vision

Happy disposition, frequent laughter, excitable personality

  1. aData taken from this survey
  2. Frequency of features reported in surveys (TBL1XR1) or available literature (related disorders) is denoted as follows: + < 25%; ++ 25–49%; +++ 50 = 74%; ++++ >  = 75%; –absent
  3. Frequency of features associated with related genetic syndromes associated with autism spectrum disorder obtained from review of prior literature. Phelan McDermid Syndrome: Frank Y. The Neurological Manifestations of Phelan-McDermid Syndrome. Pediatr Neurol. 2021 Sep;122:59–64. Soorya L, Kolevzon A, Zweifach J, Lim T, Dobry Y, Schwartz L, et al. Prospective investigation of autism and genotype–phenotype correlations in 22q13 deletion syndrome and SHANK3 deficiency. Mol Autism. 2013 Jun 11;4:18. Pitt-Hopkins Syndrome: Goodspeed K, Newsom C, Morris MA, Powell C, Evans P, Golla S. Pitt-Hopkins Syndrome: A Review of Current Literature, Clinical Approach, and 23-Patient Case Series. J Child Neurol. 2018 Mar;33(3):233–44. Watkins A, Bissell S, Moss J, Oliver C, Clayton-Smith J, Haye L, et al. Behavioural and psychological characteristics in Pitt-Hopkins syndrome: a comparison with Angelman and Cornelia de Lange syndromes. J Neurodev Disord. 2019 Oct 5;11(1):24. Fragile X Syndrome: Oakes A, Thurman AJ, McDuffie A, Bullard LM, Hagerman RJ, Abbeduto L. Characterising repetitive behaviours in young boys with fragile X syndrome. J Intellect Disabil Res. 2016;60(1):54–67. Ciaccio C, Fontana L, Milani D, Tabano S, Miozzo M, Esposito S. Fragile X syndrome: a review of clinical and molecular diagnoses. Ital J Pediatr. 2017 Dec;43(1):39. Arron K, Oliver C, Moss J, Berg K, Burbidge C. The prevalence and phenomenology of self-injurious and aggressive behaviour in genetic syndromes. J Intellect Disabil Res. 2011;55(2):109–20. Moss J, Oliver C, Arron K, Burbidge C, Berg K. The Prevalence and Phenomenology of Repetitive Behavior in Genetic Syndromes. J Autism Dev Disord. 2009 Apr;39(4):572–88. Rett Syndrome: Gold WA, Krishnarajy R, Ellaway C, Christodoulou J. Rett Syndrome: A Genetic Update and Clinical Review Focusing on Comorbidities. ACS Chem Neurosci. 2018 Feb 21;9(2):167–76. Frullanti E, Papa FT, Grillo E, Clarke A, Ben-Zeev B, Pineda M, et al. Analysis of the Phenotypes in the Rett Networked Database. Int J Genomics. 2019 Mar 27;2019:6,956,934. Wulffaert J, Van Berckelaer-Onnes IA, Scholte EM. Autistic disorder symptoms in Rett syndrome. Autism. 2009 Nov 1;13(6):567–81. Cianfaglione R, Clarke A, Kerr M, Hastings RP, Oliver C, Moss J, et al. A national survey of Rett syndrome: behavioural characteristics. J Neurodev Disord. 2015 Mar 4;7(1):11. Angelman Syndrome: Bird LM. Angelman syndrome: review of clinical and molecular aspects. Appl Clin Genet. 2014 May 16;7:93–104. Glassman LW, Grocott OR, Kunz PA, Larson AM, Zella G, Ganguli K, et al. Prevalence of gastrointestinal symptoms in Angelman syndrome. Am J Med Genet A. 2017;173(10):2703–9. Larson AM, Shinnick JE, Shaaya EA, Thiele EA, Thibert RL. Angelman syndrome in adulthood. Am J Med Genet A. 2015 Feb;167(2):331–44