Translocation (8-14) is characteristic of ?
**Core Concept**
Translocation in genetics refers to the process by which a part of a chromosome breaks off and reattaches to a different location on the same or a different chromosome. This can lead to the creation of a new chromosomal abnormality, such as the Philadelphia chromosome, which is a hallmark of certain cancers.
**Why the Correct Answer is Right**
Translocation (8-14) specifically refers to the movement of genetic material from chromosome 8 to chromosome 14. This type of translocation is characteristic of mantle cell lymphoma, a rare type of non-Hodgkin's lymphoma. The translocation involves the fusion of the cyclin D1 gene (CCND1) on chromosome 11 with the immunoglobulin heavy chain locus on chromosome 14, leading to overexpression of cyclin D1 and uncontrolled cell proliferation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because translocation (8-14) is not typically associated with acute lymphoblastic leukemia (ALL), which is more commonly linked to translocations involving chromosomes 9 and 22 (BCR-ABL).
**Option B:** This option is incorrect because while translocations involving chromosomes 8 and 14 can be seen in other types of lymphoma, they are not characteristic of follicular lymphoma, which is more commonly associated with translocations involving the BCL2 gene.
**Option C:** This option is incorrect because translocation (8-14) is not typically associated with multiple myeloma, which is more commonly linked to translocations involving chromosomes 11 and 14 (CCND1-IGH).
**Clinical Pearl / High-Yield Fact**
It's worth noting that mantle cell lymphoma is a distinct clinical entity from other types of non-Hodgkin's lymphoma, and the presence of translocation (8-14) can be used as a diagnostic criterion.
**Correct Answer: D. Translocation (8-14) is characteristic of mantle cell lymphoma.**