Proved association of celiac sprue is with:
## **Core Concept**
Celiac sprue, also known as celiac disease, is a chronic autoimmune disorder primarily affecting the small intestine, triggered by ingestion of gluten in genetically predisposed individuals. The condition leads to mucosal damage, malabsorption, and various clinical manifestations. It is associated with specific genetic markers and other autoimmune diseases.
## **Why the Correct Answer is Right**
The correct answer, **C. HLA DQ2 and DQ8**, is right because celiac disease has a strong association with specific HLA (human leukocyte antigen) genotypes, notably HLA-DQ2 and HLA-DQ8. These genetic markers are found in the majority of patients with celiac disease and are considered necessary but not sufficient for the development of the disease. The presence of these HLA genotypes in a patient with suggestive symptoms helps in diagnosing celiac disease.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, although there are various genetic associations with autoimmune diseases, the specific and proved association with celiac sprue is with HLA DQ2 and DQ8, not with other HLA types listed here.
- **Option B:** This option is incorrect as it does not accurately represent the genetic association with celiac disease. Other genetic markers might be associated with different autoimmune conditions but are not specifically linked to celiac sprue.
- **Option D:** This option is incorrect because it likely represents a distractor with either unrelated genetic markers or a format that does not accurately reflect the known associations with celiac disease.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that celiac disease is strongly associated with **HLA-DQ2** (present in about 90-95% of patients) and **HLA-DQ8** (present in most of the remaining patients). Testing for these genetic markers can help in diagnosing celiac disease, especially in cases with atypical presentations or when serological tests are equivocal. However, it's crucial to remember that the absence of these markers does not entirely rule out celiac disease but makes it less likely.
## **Correct Answer:** . **HLA DQ2 and DQ8**