rs1556107481
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1_ModeratePM2PP3_StrongPP5_Very_Strong
The NM_004429.5(EFNB1):c.499+1G>A variant causes a splice donor change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Genomes: not found (cov: 25)
Consequence
EFNB1
NM_004429.5 splice_donor
NM_004429.5 splice_donor
Scores
2
2
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 9.96
Genes affected
EFNB1 (HGNC:3226): (ephrin B1) The protein encoded by this gene is a type I membrane protein and a ligand of Eph-related receptor tyrosine kinases. It may play a role in cell adhesion and function in the development or maintenance of the nervous system. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PVS1
?
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.08837656 fraction of the gene. Cryptic splice site detected, with MaxEntScore 4.9, offset of -10, new splice context is: aagGTtggg. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant X-68839757-G-A is Pathogenic according to our data. Variant chrX-68839757-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 559938.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
EFNB1 | NM_004429.5 | c.499+1G>A | splice_donor_variant | ENST00000204961.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
EFNB1 | ENST00000204961.5 | c.499+1G>A | splice_donor_variant | 1 | NM_004429.5 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 25
GnomAD3 genomes
?
Cov.:
25
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome ? Cov.: 25
GnomAD4 genome
?
Cov.:
25
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Craniofrontonasal syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Lifecell International Pvt. Ltd | - | A Heterozygous Splice site donor variant c.499+1G>A in Intron 3 of the EFNB1 gene that results in the amino acid substitution was identified. The observed variant is novel in gnomAD exomes and genomes. The severity of the impact of this variant on the protein is high, based on the effect of the protein and REVEL score . Rare Exome Variant Ensemble Learner (REVEL) is an ensembl method for predicting the pathogenicity of missense variants based on a combination of scores from 13 individual tools: MutPred, FATHMM v2.3, VEST 3.0, PolyPhen-2, SIFT, PROVEAN, MutationAssessor, MutationTaster, LRT, GERP++, SiPhy, phyloP, and phastCons. The REVEL score for an individual missense variant can range from 0to 1, with higher scores reflecting greater likelihood that the variant is disease-causing. ClinVar has also classified this variant as Likely Pathogenic (Variant ID: 559938). Based on the above evidence this variant has been classified as Pathogenic according to the ACMG guidelines. - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Equipe Genetique des Anomalies du Developpement, Université de Bourgogne | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DG_spliceai
Position offset: -11
DS_DL_spliceai
Position offset: -1
Find out detailed SpliceAI scores and Pangolin per-transcript scores at