rs903588155

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017802.4(DNAAF5):​c.780+6T>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,613,886 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 predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

DNAAF5
NM_017802.4 splice_region, intron

Scores

2
Splicing: ADA: 0.00008697
2

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.163
Variant links:
Genes affected
DNAAF5 (HGNC:26013): (dynein axonemal assembly factor 5) The protein encoded by this gene is essential for the preassembly or stability of axonemal dynein arms, and is found only in organisms with motile cilia and flagella. Mutations in this gene are associated with primary ciliary dyskinesia-18, a disorder characterized by abnormalities of motile cilia. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Feb 2013]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.85).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DNAAF5NM_017802.4 linkc.780+6T>A splice_region_variant, intron_variant Intron 2 of 12 ENST00000297440.11 NP_060272.3 Q86Y56-1B3KPE2
DNAAF5XM_024446813.2 linkc.780+6T>A splice_region_variant, intron_variant Intron 2 of 11 XP_024302581.1
DNAAF5NR_075098.2 linkn.740+6T>A splice_region_variant, intron_variant Intron 2 of 12

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DNAAF5ENST00000297440.11 linkc.780+6T>A splice_region_variant, intron_variant Intron 2 of 12 1 NM_017802.4 ENSP00000297440.6 Q86Y56-1
DNAAF5ENST00000440747.5 linkc.183+6T>A splice_region_variant, intron_variant Intron 2 of 12 2 ENSP00000403165.1 H0Y650
DNAAF5ENST00000437419.5 linkc.96+2538T>A intron_variant Intron 1 of 4 5 ENSP00000410788.1 H7C3B1
DNAAF5ENST00000438961.1 linkn.249+6T>A splice_region_variant, intron_variant Intron 2 of 4 4

Frequencies

GnomAD3 genomes
AF:
0.0000657
AC:
10
AN:
152256
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000458
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:
0.00
Gnomad OTH
AF:
0.00143
GnomAD3 exomes
AF:
0.00000399
AC:
1
AN:
250892
Hom.:
0
AF XY:
0.00000737
AC XY:
1
AN XY:
135736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000684
AC:
10
AN:
1461630
Hom.:
0
Cov.:
31
AF XY:
0.00000688
AC XY:
5
AN XY:
727096
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.000134
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.0000657
AC:
10
AN:
152256
Hom.:
0
Cov.:
32
AF XY:
0.0000672
AC XY:
5
AN XY:
74386
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000458
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00143
Alfa
AF:
0.0000566
Hom.:
0
Bravo
AF:
0.000181

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Primary ciliary dyskinesia Uncertain:1
Nov 04, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change falls in intron 2 of the DNAAF5 gene. It does not directly change the encoded amino acid sequence of the DNAAF5 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with DNAAF5-related conditions. ClinVar contains an entry for this variant (Variation ID: 525514). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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. -

DNAAF5-related disorder Uncertain:1
Jan 17, 2023
PreventionGenetics, part of Exact Sciences
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The DNAAF5 c.780+6T>A variant is predicted to interfere with splicing. This variant may have a minimal impact on splicing based on available splicing prediction programs (Alamut Visual Plus v1.6.1). However, such computer prediction programs are imperfect. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0029% of alleles in individuals of Latino descent in gnomAD (http://gnomad.broadinstitute.org/variant/7-769490-T-A). Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.85
CADD
Benign
5.5
DANN
Benign
0.54
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.3

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000087
dbscSNV1_RF
Benign
0.058
SpliceAI score (max)
0.10
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs903588155; hg19: chr7-769490; API