Question

The parents’ chromosome tests were normal, but the baby’s development is delayed. The baby had a peripheral blood chromosome test at the hospital, G-banded karyotype analysis, with a karyotype of 400 to 500 bands: 46, XY, Del(4)(P15). Is it that chromosome 4 is missing P15? What effects does this have on the baby?

Answer

From what you’ve described, it seems there might be a misunderstanding about the effects of a missing P15 on chromosome 4. Could you please specify which aspects of the child’s development are delayed? Additionally, could you provide information on the child’s height, weight, gender, and intellectual development? Generally speaking, abnormalities in the 23rd pair of chromosomes can lead to developmental delays and intellectual disabilities. If possible, please send me the test report for review.