7-21710596-C-T
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_001277115.2(DNAH11):c.6727C>T(p.Arg2243*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000158 in 1,612,146 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 Pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_001277115.2 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000920 AC: 14AN: 152120Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000847 AC: 21AN: 248072Hom.: 0 AF XY: 0.0000817 AC XY: 11AN XY: 134586
GnomAD4 exome AF: 0.000164 AC: 240AN: 1460026Hom.: 0 Cov.: 30 AF XY: 0.000167 AC XY: 121AN XY: 726268
GnomAD4 genome AF: 0.0000920 AC: 14AN: 152120Hom.: 0 Cov.: 32 AF XY: 0.0000808 AC XY: 6AN XY: 74300
ClinVar
Submissions by phenotype
Primary ciliary dyskinesia 7 Pathogenic:3
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. Sent a nasal biopsy for ciliary beat frequency analysis and results came back inconclusive, but beating pattern was analgous to other DNAH11 mutation beating patterns. -
The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.009%). Predicted Consequence/Location: Stop-gained (nonsense): predicted to result in a loss or disruption of normal protein function through nonsense-mediated decay (NMD) or protein truncation. Multiple pathogenic variants are reported downstream of the variant. The variant has been reported at least twice as pathogenic with clinical assertions and evidence for the classification (ClinVar ID: VCV000289324 /PMID: 26729821). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline. -
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not provided Pathogenic:2
Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 33715250, 31607746, 26729821, 31589614) -
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Primary ciliary dyskinesia Pathogenic:1
This sequence change creates a premature translational stop signal (p.Arg2243*) in the DNAH11 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in DNAH11 are known to be pathogenic (PMID: 18022865, 20513915, 22184204). This variant is present in population databases (rs201943194, gnomAD 0.02%). This premature translational stop signal has been observed in individual(s) with primary ciliary dyskinesia (PMID: 26729821, 31607746). ClinVar contains an entry for this variant (Variation ID: 289324). For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at