CML in children is associated with :
**Core Concept**
Chronic Myeloid Leukemia (CML) in children is a type of cancer characterized by the uncontrolled growth of myeloid cells in the bone marrow. The underlying principle being tested is the association between CML and a specific genetic abnormality.
**Why the Correct Answer is Right**
CML in children is often associated with a chromosomal translocation involving the BCR and ABL genes, resulting in the formation of the BCR-ABL fusion gene. This genetic abnormality leads to the constitutive activation of the ABL tyrosine kinase, which promotes the proliferation and survival of myeloid cells. The BCR-ABL fusion gene is a hallmark of CML and is used as a diagnostic marker.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the association between CML and a specific genetic abnormality.
**Option B:** While CML is a myeloproliferative disorder, this option is too broad and does not specifically address the genetic abnormality associated with CML in children.
**Option C:** This option may be related to a different type of leukemia, but it is not specifically associated with CML in children.
**Clinical Pearl / High-Yield Fact**
The BCR-ABL fusion gene is a critical diagnostic marker for CML, and its detection is essential for the diagnosis and management of the disease.
**Correct Answer:** A.