Mosaic Down syndrome, or mosaicism, is a rare form of Down syndrome. People with this form may have fewer symptoms of Down syndrome. Down syndrome is a genetic disorder that results in an extra copy ...

Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...

Teenagers with Down syndrome experience many of the same emotional and hormonal changes as their peers. Their teenage years can also offer the opportunity to expand their functional and social skills.

Puerto Rico's Sofía Jirau became the first Victoria's Secret model with Down syndrome earlier this month – a welcome moment of disability inclusion. People with Down syndrome have an extra chromosome ...

Approximately 10% of newborns with Down syndrome develop Transient Leukemia (TL), a disorder that is unique to infants with constitutional trisomy 21 (or trisomy 21 mosaicism). TL blasts disappear ...

A child born with this condition has extra genetic material caused by abnormal cell division. This results in an extra full or partial copy of chromosome 21. There are three types of Down syndrome, ...

A quick genetics lesson is probably in order here. Every cell in a person’s body contains their genetic code, or DNA, which typically consists of 23 pairs of chromosomes — with one chromosome in each ...

Fetal alcohol syndrome (FAS) and Down syndrome are both conditions that are present at birth. While they both affect facial appearance, development, and physical health, they have different causes.

A single missing molecule in the brain is emerging as a powerful new clue to why learning and memory are altered in Down ...

Mosaic Down syndrome is a rare form of Down syndrome. People with mosaic Down syndrome only show extra chromosomes in some cells, as opposed to all their cells. Human DNA typically contains 23 pairs ...