huBB058E - GET-Evidence variant report

Variant report for huBB058E

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VariantClinical
Importance
ImpactAllele
freq
Summary
1MYBPC3-E334KHighUncertainUncertain pathogenic

Dominant, Heterozygous
This variant has been seen in hypertrophic cardiomyopathy patients -- heterozygously in four unrelated Japanese and compound heterozygously (with R470W) in one Italian patient. The variant was not seen in 300 controls (p = 0.024) and was believed to act in a dominant fashion. The variant is also reported as pathogenic by one laboratory in ClinVar, and another lab labels it as "uncertain significance": http://www.ncbi.nlm.nih.gov/clinvar/RCV000158325/ However, according to ExAC data, 1 in 110 individuals with East Asian ancestry carries this variant: http://exac.broadinstitute.org/variant/11-47367848-C-T This is far higher than the rate of the disease, indicating observations of the variant were probably coincidental and contradicting the proposed effect.1
2MEFV-E148QModerateUncertainUncertain pathogenic

Recessive, Carrier (Heterozygous)
0.0120929Some reports believe this cause Familial Mediterranean Fever in a recessive manner with reduced penetrance (i.e. not all get the disease). However, these reports lack strong statistical significance; other studies argue the variant is not associated with the disease.1
3PIGR-A580VLowLikelyLikely pathogenic

Complex/Other, Heterozygous
0.247537In a Japanese study, this variant was associated with an increased risk for immunoglobulin A nephropathy (IgAN), a rare disease. The chances of having this disease, even with this variant, is less than 0.1%.1
4MTRR-I49MLowLikelyLikely pathogenic

Recessive, Carrier (Heterozygous)
0.451199This common variant (HapMap allele frequency of 31.3%) in a protein involved in folate (B9) and cobalamin (B12) metabolism and is often reported as "MTRR I22M" (an alternative transcript position). Mothers homozygous for this variant are associated with having around a increased chance of a child with Down syndrome (risk of 0.4%, average risk in population is 0.25%). Notably, age plays a far larger role in the rate of Down syndrome (risk is 4.5% for a mother 45-years-of-age), and it is unknown how this variant may combine with the effect of age. There are conflicting reports associating this variant with incidence of neural tube defects, possibly when combined with MTHFR A222V.1
5WFS1-R611HLowUncertainUncertain not reviewed

Recessive, Homozygous
0.400446This nonsynonymous SNP is associated with Wolfram Syndrome (known as DIDMOAD), which is characterized by early-onset non-autoimmune diabetes mellitus, diabetes insipidus, optic atrophy, and deafness) and to adult Type Two Diabetes Mellitus. The WFS1 gene maps to chromosome 4p16.3. The variant has been shown to be statistically associated with type II diabetes in six UK studies and one study of Ashkenazi Jews (Sandhu, M., et al., Minton et al.).1
6LRP5-A1330VLowUncertainUncertain pathogenic

Complex/Other, Heterozygous
0.110367In a study of a UK population this variant was associated with a small increased risk of osteoporosis and osteoporotic bone fractures, with each copy of the variant presumed to have an additive effect. A study in Chinese young men failed to find an association with peak bone density. 1
7SP110-L425SLowUncertainUncertain pathogenic

Unknown, Homozygous
0.863357This variant is associated with a slightly increased risk of tuberculosis. It is unclear whether it is itself causal, or in linkage disequilibrium with some other causal variant that has a stronger effect.1
8TP53-P72RLowUncertainUncertain pathogenic

Unknown, Heterozygous
0.627743This is a common variant was first reported as a polymorphism. It has since had mixed associations with cancer: Storey et al. conclude a 7x *increased* risk of HPV cancer for homozygotes vs hets, but Jones et al. find a 1.98x *decreased* risk for colorectal cancer. This variant may have significant impact on particular cancers, but it is unclear what effect it has on the overall burden of cancer.1
9FUT2-W154XModerateWell-establishedWell-established protective

Recessive, Carrier (Heterozygous)
0.490519This recessive protective variant confers resistance to norovirus (which causes stomach flu). 20% of Caucasians and Africans are homozygous for this variant and are "non-secretors": they do not express ABO blood type antigens in their saliva or mucosal surfaces. Most strains of norovirus bind to these antigens in the gut, and so this non-secretor status confers almost total resistantance to most types of norovirus. There are notable exceptions, some strains of norovirus bind a different target and are equally infectious for secretors and non-secretors.1
10CFH-V62ILowLikelyLikely protective

Complex/Other, Homozygous
0.391616Associated with a decreased risk for age related macular degeneration (ARMD). Homozygotes for this have a 4-5% decreased attributable risk (3-4% vs. average 8% risk), heterozygotes have slightly lower than average risk (7%). Non-carriers have an increased risk (12-13%). ARMD impairs sharp vision as age progresses. While there is no cure, treatment can slow progression of the disease and environmental factors (smoking and obesity) contribute to higher risk.1
11NPC1-H215RLowLikelyLikely protective

Complex/Other, Heterozygous
0.295687This variant is associated with a reduced risk of obesity, with an additive effect of -0.084 BMI per allele (an average of 0.54 pounds less, per allele, in a 5'6" individual). 1
12KCNJ11-K23ELowLikelyLikely protective

Unknown, Heterozygous
0.738148This variant is associated with decreased risk of type 2 diabetes. It is unclear whether this variant has additive effects, or acts in a dominant or recessive manner. Assuming diabetes has a lifetime risk of 36%, we estimate a decreased risk of around 1-2% per copy of this variant.1
13LIG4-A3VLowUncertainUncertain protective

Dominant, Heterozygous
0.035843One report has associated this with a decreased risk of multiple myeloma.1
14OCA2-H615RLowLikelyLikely benign

Complex/Other, Homozygous
0.000650678Associated with lighter skin pigmentation in East Asian populations.1
15NEFL-S472ShiftLowLikelyLikely benign

Unknown, Homozygous
Although a frameshift in this gene would be predicted to cause Charcot-Marie Neuropathy, this particular position appears to reflect a single base insertion error/mutation in the reference genome (in other words, normal individuals are always homozygous for a deletion at this position relative to reference). See chr8:24,811,060-24,811,080 annotations on UCSC.1
16LOXL1-R141LLowUncertainUncertain benign

Complex/Other, Homozygous
0.255899Associated with exfoliative glaucoma & syndrome (XFG & XFS) in various populations, but with contradicting results (protective in Caucasians, pathogenic in Japanese). Based on this it seems the variation itself -- although it affects protein structure -- is not itself causing disease. Instead it is likely associated with other nearby causal variants. As such, it is evaluated as benign by GET-Evidence (which focuses on reporting causal variants). See detailed variant report for disease risk associations.1
17TPCN2-G734ELowUncertainUncertain benign

Unknown, Homozygous
0.286166Pigmentation allele.1
18GUCY2D-A52SLowUncertainUncertain benign

Recessive, Carrier (Heterozygous)
0.21016One publication suggested that this variant possibly causes Leber's congenital amaurosis in a recessive manner, but the frequency data (36% in 1000 genomes) contradicts any significant pathogenic effect.1
19FMO3-V257MLowUncertainUncertain benign

Unknown, Homozygous
0.0570738This common variant (HapMap allele frequency of 9.2%) appears to have no functional effect. OMIM has recorded it as having been seen homozygously in an individual with Trimethylaminuria, but Treacy et al. 1998 conclude it is a polymorphism.1
20APOB-Y1422CLowUncertainUncertain benign

Unknown, Homozygous
0.999628This position is almost certainly an error in the HG18 reference sequence. 1
21FLG-R3530SLowUncertainUncertain benign

Unknown, Heterozygous
0.108849Tentatively classified as benign, although predicted by Polyphen 2 to be damaging. Other more severe null mutations (frameshift and nonsense) in this gene are reported to cause ichthyosis vulgaris in a recessive manner.1
22TAS2R38-A49PLowUncertainUncertain benign

Unknown, Heterozygous
0.431121This variant is strongly associated with causing the "taster" phenotype of phenylthiocarbamine (PTC) in a dominant manner.1
23TAS2R38-I296VLowUncertainUncertain benign

Unknown, Heterozygous
0.463376This variant is associated with "taster" status of PTC, along with 49P and 262A. Due to linkage disequilibrium, the independent effects of positions 296 and 262 is unclear. The presence of 49P confers taster status in a dominant fashion, but in the absence of 49P, the presence of 262A/296V is still positively associated with tasting PTC.1
24EDAR-V370ALowUncertainUncertain benign

Unknown, Homozygous
0.0105968Associated with thicker hair, common in Chinese and Japanese individuals and thought to be Asian-specific.1
25PTCH1-P1315LLowUncertainUncertain benign

Unknown, Heterozygous
0.29631Common polymorphism, presumed benign.1
26RP1-N985YLowUncertainUncertain benign

Unknown, Heterozygous
0.348671Probably benign. One report linked this variant to high triglycerides, but a later paper found a nearby SNP with similar association and suggests that both findings are caused by linkage to an undiscovered causal variant.1
27ABCC11-G180RLowUncertainUncertain benign

Unknown, Homozygous
0.0976947This variant is associated with dry type ear wax (a benign trait) in a recessive manner.1
28PCSK9-G670ELowUncertainUncertain benign

Unknown, Heterozygous
0.888269This variant is likely benign. 1
VariantPrioritization scoreAllele
freq
Num of
articles
Zygosity and Prioritization Score Reasons

Gene search

"GENE" or "GENE A123C":

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