Genetic Variant ENST00000567918.5:n.-100G>A (chr16-84145210-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000567918.5(DNAAF1):n.-231C>A variant causes a upstream gene change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000892 in 560,594 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000049 ( 0 hom. )

Consequence

DNAAF1
ENST00000567918.5 upstream_gene

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.95

Publications

0 publications found

Variant links:

Genes affected

DNAAF1 (HGNC:30539): (dynein axonemal assembly factor 1) The protein encoded by this gene is cilium-specific and is required for the stability of the ciliary architecture. It is involved in the regulation of microtubule-based cilia and actin-based brush border microvilli. Mutations in this gene are associated with primary ciliary dyskinesia-13. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

DNAAF1 links:

HSDL1 (HGNC:16475): (hydroxysteroid dehydrogenase like 1) Predicted to enable oxidoreductase activity. Located in intermediate filament cytoskeleton and mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

HSDL1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.77).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAAF1	NM_178452.6 link	c.-231C>A		upstream_gene_variant		ENST00000378553.10	NP_848547.4	Q8NEP3-1A0A140VJN4
HSDL1	NM_031463.5 link	c.-199G>T		upstream_gene_variant		ENST00000219439.9	NP_113651.4	Q3SXM5-1I6L975

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAAF1	ENST00000378553.10 link	c.-231C>A		upstream_gene_variant		1	NM_178452.6	ENSP00000367815.5		Q8NEP3-1
HSDL1	ENST00000219439.9 link	c.-199G>T		upstream_gene_variant		1	NM_031463.5	ENSP00000219439.4		Q3SXM5-1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151874

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000489

AC:

AN:

408720

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

212510

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

8184

American (AMR)

AF:

0.00

AC:

AN:

12490

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

10150

East Asian (EAS)

AF:

0.00

AC:

AN:

20038

South Asian (SAS)

AF:

0.00

AC:

AN:

38812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

22566

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1614

European-Non Finnish (NFE)

AF:

0.00000733

AC:

AN:

272934

Other (OTH)

AF:

0.00

AC:

AN:

21932

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.002339), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.350

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151874

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74184

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41398

American (AMR)

AF:

0.00

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5156

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10520

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67932

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

0.041

(source)

DANN

Benign

0.54

PhyloP100

-2.9

PromoterAI

-0.011

Neutral

(source)

Splicing

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

Publications

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ENST00000567918.5:n.-100G>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over