What does an extra 17th chromosome mean?

Collapse Section. Potocki-Lupski syndrome is a condition that results from having an extra copy (duplication ) of a small piece of chromosome 17 in each cell. The duplication occurs on the short (p) arm of the chromosome at a position designated p11. 2. This condition is also known as 17p11.

What happens if you have an extra chromosome 17?

The symptoms reported include: developmental delays, body asymmetry, slow growth, and cerebellar hypoplasia. Again, signs and symptoms may vary in these individuals depending on which cells and how many cells contain an extra chromosome 17.

What does chromosome 17 indicate?

Human chromosome 17 is implicated in a wide range of human genetic diseases. It is home to genes involved in early-onset breast cancer (BRCA1), neurofibromatosis (NF1) and the DNA damage response (TP53 encoding the p53 protein).

What is 17p duplication?

Chromosome 17p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 17. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved.

What would happen if you had an extra chromosome?

For example, an extra copy of chromosome 21 causes Down syndrome (trisomy 21). Chromosomal abnormalities can also cause miscarriage, disease, or problems in growth or development. The most common type of chromosomal abnormality is known as aneuploidy, an abnormal chromosome number due to an extra or missing chromosome.

IT IS SURPRISING:  What happens when there are errors during meiosis?

What is the rarest chromosome disorder?

Wolf-Hirschhorn syndrome (WHS) is an extremely rare chromosomal disorder caused by a missing piece (partial deletion or monosomy) of the short arm of chromosome 4.

Is Patau syndrome genetic?

Patau’s syndrome is a serious rare genetic disorder caused by having an additional copy of chromosome 13 in some or all of the body’s cells. It’s also called trisomy 13.

What are the disorders on chromosome 17?

Deletion of a small amount of genetic material (a microdeletion) on chromosome 17 can cause Koolen-de Vries syndrome. This disorder is characterized by developmental delay, intellectual disability, a cheerful and sociable disposition, and a variety of physical abnormalities.

What type of chromosome is 17?

Chromosome 17 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome.

Chromosome 17
No. of genes 1,124 (CCDS)
Type Autosome
Centromere position Submetacentric (25.1 Mbp)
Complete gene lists

What chromosome is the BRCA gene on?

Two cancer susceptibility genes, BRCA1 on chromosome 17q12-21 and BRCA2 on chromosome 13q12-13, are thought to be responsible for approximately 80% of families containing multiple cases of early-onset female breast cancer.