Hundreds of genes have been linked to autism. A study published in Nature helps explain how changes in different genes could affect some of the same developmental processes. 

What the Scientists Found

Researchers reduced the activity of selected autism-associated genes in laboratory-grown human neural progenitor cells, immature cells that can develop into cells of the nervous system.

Across 18 analysed disruptions, they found overlapping changes, including reduced activity in other autism-associated genes. This suggests the genes work within connected networks.

One disruption affected other genes’ activity; it did not create mutations throughout the DNA. 

The team also identified ZFX, an X-chromosome gene whose generally higher activity in female cells may help buffer certain disruptions. This is a proposed biological explanation, not proof that girls are protected from autism.

What It Means for Families

The study did not introduce a treatment or diagnostic test. Autism assessment still involves developmental history and professional observation, rather than relying on one test alone. 

Communication difficulties, repetitive behaviours, distress around changes or unusual responses to sounds and textures can be worth discussing with a healthcare professional. These features alone do not establish autism. 

To prepare for an appointment:

• Note specific examples: What happens, when and how it affects daily life.
• Include strengths and preferences: What the person enjoys and finds helpful.
• Bring relevant records: Include developmental information and caregiver or teacher observations where appropriate.
• Ask about assessment and support: Find out what can help with current difficulties.

These notes organise the discussion; they are not a home diagnostic checklist.

Finding Support

For a child, discuss concerns with a clinic, doctor or paediatrician and ask about developmental assessment. Adults seeking assessment should ask for a practitioner experienced in adult autism.

Autism South Africa’s Gauteng directory lists assessment services, public hospital neurodevelopmental clinics and support organisations. Confirm referral and appointment requirements directly. 

WHO recommends support based on each person’s needs and preferences. Families do not need to wait for a particular genetic explanation before seeking help. 

The Bottom Line

The research advances understanding of autism’s biology. For families, the useful next step remains discussing specific concerns and finding support that helps the person now.