Are there genes specifically linked to autism?

PostedNovember 18, 2025

UpdatedNovember 18, 2025

ByMy Patient Advice

Author: Lucia Alvarez, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Yes, researchers have identified many autism genes that are thought to play a role in the development of autism spectrum disorder (ASD). These aren’t single-gene switches but rather a network of autism-related genes that affect how the brain grows, connects and functions. Each person’s genetic profile is unique, which is why autism can present in such varied ways.

Some of these genetic markers are inherited from family members, while others arise spontaneously during early development. Scientists believe that the combined influence of multiple ASD genes creates a higher likelihood of being diagnosed. This helps explain why autism may run in families but also why it can appear in someone with no known family history. Understanding which genes are involved helps guide future research, diagnosis and support planning. It also gives families insight into how biology shapes behaviour, communication and sensory processing.

Examples of Autism-Linked Genes

Below are two types of autism genes that have been studied extensively, along with how they may affect individuals:

Synaptic genes affecting brain connectivity

Some autism-related genes regulate how neurons connect and communicate. Variants in these genes may be linked to differences in language, learning or emotional regulation.

Genes involved in early brain development

Other genetic markers affect how the brain is formed during pregnancy. These may contribute to repetitive behaviours, intense focus or motor coordination differences. Occupational therapy is often recommended to help manage these traits effectively.

Recognising that autism genes influence brain development and behaviour can empower families to seek early diagnosis and tailored therapies. Visit providers like Autism Detect for personal consultations and further guidance on screening and support.

For a deeper dive into the science, diagnosis and full treatment landscape, read our complete guide to Genetic Influences.

Lucia Alvarez, MSc

Author

Lucia Alvarez is a clinical psychologist with a Master’s in Clinical Psychology and extensive experience providing evidence-based therapy and psychological assessment to children, adolescents, and adults. Skilled in CBT, DBT, and other therapeutic interventions, she has worked in hospital, community, and residential care settings. Her expertise includes grief counseling, anxiety management, and resilience-building, with a strong focus on creating safe, supportive environments to improve mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.