Tag: twins

July 2014
News

Molecular mechanisms: Patterns of DNA tags altered in autism

by  /  8 July 2014

Children with autism have atypical patterns of epigenetic modifications — chemical tags on DNA that influence gene expression, suggests a study published 29 May in PLOS Genetics.

1 Comment
June 2014
Opinion / Cross Talk

What constitutes ‘environmental’ risk for autism?

by  /  11 June 2014

If inherited risk for autism is 50 percent, does that make the remaining half of risk environmental? Scientists clarify a large population study.

16 Comments
May 2014
News

Environment, genetics may contribute equally to autism risk

by  /  22 May 2014

A large study of autism in Swedish families suggests that about half of the risk for autism comes from genetics and the other half from environmental factors, researchers reported 7 May in The Journal of the American Medical Association. However, the mathematical model the study used may not be appropriate for evaluating autism risk, experts say.

19 Comments
Opinion

Twin study set to explore autism, attention deficit overlap

by  /  16 May 2014

A Swedish twin study plans to search for the shared genetic and environmental origins of autism and attention deficit hyperactivity disorder, which are often mistaken for each other.

4 Comments
March 2014
Opinion / Cross Talk

Are girls really protected from autism?

by  /  31 March 2014

Do genetic differences or diagnostic biases account for the gender imbalance in autism? Catherine Lord, David Skuse and Angelica Ronald weigh in.

1 Comment
News

Genes maintain stability of autism traits over time

by  /  3 March 2014

Traits that typically accompany autism, such as social impairments and communication difficulties, remain largely consistent as children age, and this stability is primarily due to genetic factors, a new study concludes. The research, published in the March issue of the Journal of the American Academy of Child & Adolescent Psychiatry, is based on more than 6,000 twin pairs in the general population.

3 Comments
December 2013
Opinion

Anxiety, autism may share common basis

by  /  6 December 2013

Anxiety runs in families with a history of autism, hinting that the two conditions may share a common origin, suggests a twin study published in November.

5 Comments
September 2013
News

Sibling study highlights autism’s genetic roots

by  /  12 September 2013

Children who have older siblings with autism are seven times more likely than those in the general population to receive autism diagnoses themselves, according to a large Danish study published 19 August in JAMA Pediatrics.

15 Comments
August 2013
News

Genetics: Methyl groups on DNA modify Rett symptoms

by  /  20 August 2013

Methylation — modifications to DNA that regulate gene expression — may explain why identical twins with the same Rett syndrome mutation have different symptoms, according to a study published 21 June in PLoS One.

0 Comments
July 2013
Multimedia / Webinars

Francesca Happe presents ‘fractionated triad’ model

24 July 2013

Watch the complete replay of Francesca Happé discussing how autism’s constellation of symptoms may have independent biological causes. Submit your own follow-up questions.

10 Comments