Translocation Down syndrome: This happens when genetic material from chromosome 21 attaches to another chromosome. There are no known environmental factors thought to cause down syndrome.

Overall, the death rate among babies with Down’s syndrome in their first year has decreased by around 40%, having stood at 1.5% during 1979-1983 and 0.9% during 1999-2003.

As October marks World Down Syndrome Awareness Month, it’s an opportune time to learn and support those with the condition. About 5,700 babies are born in the U.S. with Down syndrome each year ...

Mosaic Down Syndrome Symptoms The symptoms of mosaic Down syndrome are the same as symptoms of the more common type of Down syndrome, in which all of the cells have three copies of chromosome 21.

Mar. 23 -- (HealthDay News) -- Down syndrome is a genetic birth defect that's usually caused by an extra copy of the 21st chromosome. It's the single most common cause of human birth defects ...

Sign and symptom comparison While FAS and Down syndrome can affect people in similar areas, there are differences in the symptoms. Not all people with FAS or Down syndrome will have all the symptoms.

Structural brain changes in the medial temporal lobe found up to 15 years before Alzheimer’s symptoms in people with Down syndrome, aiding early diagnosis.

In Canada, "the average lifespan of someone with Down syndrome is about 60 years old," said Dr. Brian Skotko, senior author ...

She did this in cells from a boy with Down’s syndrome, which had been reprogrammed into a stem cell-like state. XIST did its thing, “painting” one of the three chromosome-21s, and condensing ...