Floating Harbor Syndrome

Chromosome 15 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 15 spans about 106 million base pairs (the building material of DNA) and represents between 3% and 3.5% of the total DNA in cells.

Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 15 likely contains between 700 and 900 genes.

There are two different variations and of course complications in relation to both; long arm and short arm as described here:

Pairs of human chromosomes are numbered from 1 through 22, with an unequal 23rd pair of X and Y chromosomes for males and two X chromosomes for females. Each chromosome has a short arm designated as “p” and a long arm identified by the letter “q.” Chromosomes are further subdivided into bands that are numbered.

I will not attempt to go into this at the moment as the medical terminology is all way way above my head! I will attempt to give you an insight into what it is like having a child who has this diagnosis…..tbc