rs759412460
Variant summary
Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_003640.5(ELP1):c.641delC(p.Pro214GlnfsTer39) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,611,430 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_003640.5 frameshift
Scores
Clinical Significance
Conservation
Publications
- primary dysautonomiaInheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health
- Riley-Day syndromeInheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
- medulloblastomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Pathogenic. The variant received 16 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ELP1 | NM_003640.5 | c.641delC | p.Pro214GlnfsTer39 | frameshift_variant | Exon 7 of 37 | ENST00000374647.10 | NP_003631.2 | |
| ELP1 | NM_001318360.2 | c.299delC | p.Pro100GlnfsTer39 | frameshift_variant | Exon 7 of 37 | NP_001305289.1 | ||
| ELP1 | XM_047423991.1 | c.641delC | p.Pro214GlnfsTer39 | frameshift_variant | Exon 7 of 25 | XP_047279947.1 | ||
| ELP1 | NM_001330749.2 | c.-307-1591delC | intron_variant | Intron 6 of 34 | NP_001317678.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| ELP1 | ENST00000374647.10 | c.641delC | p.Pro214GlnfsTer39 | frameshift_variant | Exon 7 of 37 | 1 | NM_003640.5 | ENSP00000363779.5 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152166Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000517 AC: 13AN: 251340 AF XY: 0.0000368 show subpopulations
GnomAD4 exome AF: 0.0000158 AC: 23AN: 1459146Hom.: 0 Cov.: 30 AF XY: 0.0000179 AC XY: 13AN XY: 726044 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152284Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74474 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Familial dysautonomia Pathogenic:4
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
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Variant summary: ELP1 c.641delC (p.Pro214GlnfsX39) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. The variant allele was found at a frequency of 5e-05 in 282744 control chromosomes (gnomAD). This frequency is not significantly higher than estimated for a pathogenic variant in ELP1 causing Familial Dysautonomia (5e-05 vs 0.0018), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.641delC in individuals affected with Familial Dysautonomia and no experimental evidence demonstrating its impact on protein function has been reported. ClinVar contains an entry for this variant (Variation ID: 553108). Based on the evidence outlined above, the variant was classified as pathogenic. -
This variant deletes one nucleotide resulting in an amino acid alteration, replacing a proline (P) with a glutamine (Q) at codon 214 creating a premature stop signal in the new reading frame noted as p.P214Qfs*39. The substitution is predicted to result in a non-functional ELP1 protein, either through protein truncation or nonsense-mediated mRNA decay. This mutation is considered a non-tolerated amino acid change based on in silico prediction algorithms (disease causing), and it has not been reported in the Clinical Variant Database (NCBI National Library of Medicine, NIH) but it has been described in 7 alleles out of 119208, the majority (6) belonging to heterozygous carries of Latino origin. Based on these findings and the limited literature regarding this substitution we consider it as a likely pathogenic variant. -
not specified Pathogenic:1
The c.641delC variant, located in coding exon 6 of the IKBKAP gene, results from a deletion of one nucleotide at nucleotide position 641, causing a translational frameshift with a predicted alternate stop codon (p.P214Qfs*39). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -
Familial dysautonomia;C0025149:Medulloblastoma Pathogenic:1
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not provided Pathogenic:1
This sequence change creates a premature translational stop signal (p.Pro214Glnfs*39) in the ELP1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ELP1 are known to be pathogenic (PMID: 18303054, 24173031). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with ELP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 553108). For these reasons, this variant has been classified as Pathogenic. -
Medulloblastoma Pathogenic:1
The ELP1 c.641del (p.Pro214GlnfsTer39) change causes a frameshift and the creation of a premature stop codon. This change is predicted to cause protein truncation or absence of the protein due to nonsense mediated decay. This variant has been reported in at least four pediatric patients with the sonic hedgehog (SHH) subtype of medulloblastoma (PMID: 32296180, internal data). This variant has a maximum subpopulation frequency of 0.034% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). Loss-of-function variants in ELP1 are known to be pathogenic (PMID: 18303054, 32296180). In summary, this variant meets criteria to be classified as likely pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at