Gene entry
LCT
lactase
- Chromosome
- 2
- Cytoband
- 2q21.3
- Variants (rsID)
- 13
LCT is a protein-coding gene, meaning the body reads it as instructions to build a protein, located on chromosome 2 (region 2q21.3). Its official name is “lactase”. The reference table lists 13 variants (rsID) for this gene.
Clinically classified variants
7 reference-table entries with clinical significance.
- rs4988235Associationsingle nucleotide variantLactase persistence
- rs115690016Benignsingle nucleotide variantCongenital lactase deficiency|Lactose intolerance
- rs2304371Benignsingle nucleotide variantCongenital lactase deficiency|Lactose intolerance
- rs2322659Benignsingle nucleotide variantCongenital lactase deficiency|Lactose intolerance
- rs3754689Benignsingle nucleotide variantLactose intolerance|Congenital lactase deficiency
- rs77631953Likely benignsingle nucleotide variantCongenital lactase deficiency|Lactose intolerance
- rs386833833Likely pathogenicsingle nucleotide variantCongenital lactase deficiency
Other listed variants
Public references
Data from the institutional reference table and public NCBI annotation. For education only; not a substitute for medical or genetic counselling.