ABCB11 rs886043986: Understanding This Rare Genetic Variant
The rs886043986 variant is a rare genetic change located within the ABCB11 gene. It is classified as pathogenic and is associated with hereditary liver conditions, specifically progressive familial intrahepatic cholestasis type 2 (PFIC2) and benign recurrent intrahepatic cholestasis type 2 (BRIC2).
What each genotype means
Typical risk profile
This is the reference genotype for this variant. It is not associated with the pathogenic risk linked to the alternative allele in clinical databases.
This is the most common genotype observed in the general population.
Carrier of rare variant
You carry one copy of the variant associated with hereditary liver conditions. While this variant is classified as pathogenic, clinical significance for heterozygous carriers can be variable; please consult with a medical professional regarding your liver health.
This genotype is rare in the general population.
Increased risk profile
You carry two copies of this variant, which is documented in clinical databases as pathogenic and linked to conditions such as progressive familial intrahepatic cholestasis type 2. This genotype may increase susceptibility to liver-related health issues, and you should discuss these findings with a healthcare provider or genetic counselor.
This genotype is very rare in the general population.
What is the rs886043986 Variant?
The rs886043986 variant is a specific change in the DNA sequence of the ABCB11 gene, located on chromosome 2. In genetic terms, a single nucleotide polymorphism (SNP) like this represents a variation at a single position in the genome. While many variants are common and have little impact on health, rs886043986 is categorized as pathogenic. This means that the presence of this specific alteration is linked to a disruption in the normal function of the protein encoded by the ABCB11 gene. Because this variant is rare, it is not typically found in the general population at high frequencies. Researchers identify such variants by comparing the DNA of individuals with specific liver conditions against reference genomes to pinpoint the exact location of the genetic change.
The Role of the ABCB11 Gene
The ABCB11 gene provides instructions for making a protein called the bile salt export pump (BSEP). This protein is essential for the proper function of the liver, as it acts as a pump to move bile salts from liver cells (hepatocytes) into the bile ducts. Bile salts are necessary for the digestion of fats, but they can be toxic to liver cells if they accumulate. When the BSEP protein is defective or missing, bile salts build up inside the liver cells, leading to cellular damage and inflammation. This process is known as cholestasis. Because the ABCB11 gene is so critical for maintaining bile flow, any significant disruption to its structure or function can have profound effects on liver health, potentially leading to the chronic liver diseases associated with this gene.
Research and Clinical Associations
Scientific research has established a strong link between pathogenic variants in the ABCB11 gene and two primary conditions: progressive familial intrahepatic cholestasis type 2 (PFIC2) and benign recurrent intrahepatic cholestasis type 2 (BRIC2). PFIC2 is a severe, inherited disorder that typically presents in early infancy with progressive liver disease. BRIC2, while also involving cholestasis, is characterized by intermittent episodes of jaundice that may resolve without progressing to chronic liver failure. The evidence for the pathogenicity of rs886043986 is supported by clinical databases like ClinVar, which aggregate data from genetic testing and research studies. It is important to note that while this variant is linked to these conditions, the clinical expression of genetic variants can vary between individuals, and the presence of a variant does not always guarantee the development of a specific disease phenotype.
Population Frequency and Interpretation
The rs886043986 variant is considered rare across global populations. In genetics, rarity often means that the variant is not found in the vast majority of individuals, making it a significant finding when it does appear in a clinical context. Because it is rare, large-scale population studies may not provide extensive data on its frequency across every specific ancestry. When interpreting genetic information, it is crucial to understand that rare pathogenic variants are often studied in the context of families affected by specific hereditary conditions. If you have received information about this variant from a genetic test, it is recommended to consult with a genetic counselor or a medical professional who can help interpret the results in the context of your personal and family medical history.
Managing Genetic Information
Understanding your genetic profile can be a powerful tool, but it must be handled with care. If you have identified that you carry the rs886043986 variant, this information should be discussed with a healthcare provider, such as a hepatologist or a clinical geneticist. They can provide context regarding what this means for your health and whether any monitoring is appropriate. It is important to remember that genetic variants are only one piece of the puzzle; environmental factors, lifestyle, and other genetic modifiers also play a role in health outcomes. You cannot change your genetic code, but you can use this information to make informed decisions about your healthcare. Always rely on professional medical advice rather than self-interpretation of genetic data, and ensure that any clinical decisions are made in partnership with your medical team.
How common is this variant?
The rs886043986 variant is rare in the general population, with limited frequency data available across diverse ancestral groups.
Frequently asked questions
What is the ABCB11 gene?
The ABCB11 gene encodes the bile salt export pump (BSEP), a protein that transports bile salts out of liver cells. Proper function of this protein is essential for healthy bile flow and liver function.
What are PFIC2 and BRIC2?
PFIC2 and BRIC2 are hereditary liver disorders caused by mutations in the ABCB11 gene. PFIC2 is typically a severe, progressive condition starting in infancy, while BRIC2 involves recurring episodes of cholestasis.
Is rs886043986 dangerous?
The rs886043986 variant is classified as pathogenic, meaning it is linked to liver disease. If you have concerns about this variant, you should discuss your results with a doctor or genetic counselor.
Can I prevent liver disease if I have this variant?
Genetic variants are only one factor in health. You should consult with a medical professional to discuss appropriate monitoring, lifestyle choices, and any necessary clinical management.
Sources & further reading
Educational information only, last refreshed 10/2/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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