7-21606733-G-A

Variant names:

• chr7-21606733-G-A
• rs764336866
• NM_001277115.2:c.3852G>A
• DNAH11 p.Lys1284Lys

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001277115.2(DNAH11):​c.3852G>A​(p.Lys1284Lys) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000667 in 149,822 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.0000067 (0 hom., cov: 30)
  • Exomes 𝑓: 0.0000048 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNAH11 NM_001277115.2 splice_region, synonymous
• Scores: Splicing: ADA: 0.9999
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 3.26
• Publications: 0 publications found

Genes affected

DNAH11 (HGNC:2942): (dynein axonemal heavy chain 11) This gene encodes a ciliary outer dynein arm protein and is a member of the dynein heavy chain family. It is a microtubule-dependent motor ATPase and has been reported to be involved in the movement of respiratory cilia. Mutations in this gene have been implicated in causing Kartagener Syndrome (a combination of situs inversus totalis and Primary Ciliary Dyskinesia (PCD), also called Immotile Cilia Syndrome 1 (ICS1)) and male sterility. [provided by RefSeq, Mar 2013]

DNAH11 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 7

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001277115.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH11	NM_001277115.2	MANE Select	c.3852G>A	p.Lys1284Lys	splice_region synonymous	Exon 20 of 82	NP_001264044.1	Q96DT5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAH11	ENST00000409508.8	TSL:5 MANE Select	c.3852G>A	p.Lys1284Lys	splice_region synonymous	Exon 20 of 82	ENSP00000475939.1	Q96DT5

Frequencies

GnomAD3 genomes AF: 0.00000667 AC: 1 AN: 149822 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000148

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000249 AC: 6 AN: 241290 AF XY: 0.0000230

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000551

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000481 AC: 7 AN: 1454902 Hom.: 0 Cov.: 33 AF XY: 0.00000415 AC XY: 3 AN XY: 723320

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33392

American (AMR) AF: 0.00 AC: 0 AN: 44274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25968

East Asian (EAS) AF: 0.00 AC: 0 AN: 39548

South Asian (SAS) AF: 0.00 AC: 0 AN: 85090

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52780

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5748

European-Non Finnish (NFE) AF: 0.00000632 AC: 7 AN: 1107980

Other (OTH) AF: 0.00 AC: 0 AN: 60122

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0000000000000353051), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.00000667 AC: 1 AN: 149822 Hom.: 0 Cov.: 30 AF XY: 0.0000137 AC XY: 1 AN XY: 72826

African (AFR) AF: 0.00 AC: 0 AN: 40646

American (AMR) AF: 0.00 AC: 0 AN: 14882

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3458

East Asian (EAS) AF: 0.00 AC: 0 AN: 5008

South Asian (SAS) AF: 0.00 AC: 0 AN: 4738

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10020

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.0000148 AC: 1 AN: 67794

Other (OTH) AF: 0.00 AC: 0 AN: 2056

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Primary ciliary dyskinesia (1)
-	1	-	Primary ciliary dyskinesia 7 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.22
CADD	Benign	21
DANN	Benign	0.82
PhyloP100		3.3

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.91		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.91		Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs764336866;

hg19: chr7-21646351;