rs1178187217
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate
The NM_001277115.2(DNAH11):c.2966G>A(p.Arg989Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000447 in 1,566,648 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_001277115.2 missense
Scores
Clinical Significance
Conservation
Publications
- primary ciliary dyskinesia 7Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), ClinGen
- primary ciliary dyskinesiaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| DNAH11 | NM_001277115.2 | c.2966G>A | p.Arg989Gln | missense_variant | Exon 15 of 82 | ENST00000409508.8 | NP_001264044.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| DNAH11 | ENST00000409508.8 | c.2966G>A | p.Arg989Gln | missense_variant | Exon 15 of 82 | 5 | NM_001277115.2 | ENSP00000475939.1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152104Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.00 AC: 0AN: 234838 AF XY: 0.00
GnomAD4 exome AF: 0.00000353 AC: 5AN: 1414544Hom.: 0 Cov.: 32 AF XY: 0.00000429 AC XY: 3AN XY: 698714 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152104Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74316 show subpopulations
ClinVar
Submissions by phenotype
Primary ciliary dyskinesia 7 Pathogenic:1Uncertain:1
For this patient, the lab reported the c.6727C>T (p.R2243X) variant as pathogenic and the c.2966G>A (p.R989Q) as a VUS. We sent a nasal biopsy for ciliary beat frequency analysis and the results came back inconclusive, but the beating pattern was analogous to other DNAH11 mutation beating patterns.
The p.Arg989Gln variant in DNAH11 has been reported in 2 individuals with primary ciliary dyskinesia (PMID: 31607746, 38562900) and has been identified in 0.004% (3/82028) of South Asian chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP ID: rs1178187217). Although this variant has been seen in the general population in a heterozygous state, its frequency is low enough to be consistent with a recessive carrier frequency. This variant has also been reported in ClinVar (Variation ID: 453287) and has been interpreted as pathogenic by Undiagnosed Diseases Network (NIH) and as a variant of uncertain of significance by Invitae and Institute Of Molecular Biology And Genetics (Federal Almazov National Medical Research Centre). Of the 2 affected individuals, 1 was a compound heterozygotes that carried a reported pathogenic variant in trans which increases the likelihood that the p.Arg989Gln variant is pathogenic (Variation ID: 289324, PMID: 31607746). Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In summary, the clinical significance of the p.Arg989Gln variant is uncertain. ACMG/AMP Criteria applied: PM3, PM2_supporting (Richards 2015).
Primary ciliary dyskinesia Uncertain:2
This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 989 of the DNAH11 protein (p.Arg989Gln). This variant is present in population databases (no rsID available, gnomAD 0.0008%). This missense change has been observed in individual(s) with clinical features of primary ciliary dyskinesia (PMID: 31607746). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 453287). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DNAH11 protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
This sequence change replaces arginine (basic and polar) with glutamine (charge-neutral and polar) at codon 989 of the DNAH11 protein (p.Arg989Gln). The variant c.2966G>A has a low allele frequency in gnomAD Genomes (Version 3.1.2: ƒ = 0.000013). Particular in silico pathogenicity prediction tools (MetaRNN, MutPred, DANN, EIGEN PC, Mutation assessor, etc) predicted the c.2966G>A to be likely deleterious. ClinVar contains an entry for this variant (records with likely pathogenic and VUS interpretations (variation ID 453287)). The patient possessed the c.2966G>A variant in trans with another rare missense variant in DNAH11 (c.2824C>A, p.Pro942Thr). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
not specified Uncertain:1
Variant summary: DNAH11 c.2966G>A (p.Arg989Gln) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4.5e-06 in 1566648 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2966G>A has been reported in the literature in at least one compound heterozygous individual affected with clinical features of Primary Ciliary Dyskinesia 7 (e.g., Lee_2020). However, these data do not allow any conclusion about variant significance. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 31607746). ClinVar contains an entry for this variant (Variation ID: 453287). Based on the evidence outlined above, the variant was classified as uncertain significance.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at