rs140748737
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_001360.3(DHCR7):c.99-4G>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0116 in 1,575,646 control chromosomes in the GnomAD database, including 141 homozygotes. 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 Likely benign (★★).
Frequency
Consequence
NM_001360.3 splice_region, splice_polypyrimidine_tract, intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -20 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DHCR7 | NM_001360.3 | c.99-4G>A | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant | ENST00000355527.8 | |||
DHCR7 | NM_001163817.2 | c.99-4G>A | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant | ||||
DHCR7 | XM_011544777.3 | c.99-4G>A | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DHCR7 | ENST00000355527.8 | c.99-4G>A | splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant | 1 | NM_001360.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00983 AC: 1495AN: 152152Hom.: 11 Cov.: 32
GnomAD3 exomes AF: 0.00975 AC: 1824AN: 187140Hom.: 18 AF XY: 0.0102 AC XY: 1016AN XY: 99682
GnomAD4 exome AF: 0.0118 AC: 16736AN: 1423376Hom.: 130 Cov.: 34 AF XY: 0.0117 AC XY: 8224AN XY: 704398
GnomAD4 genome ? AF: 0.00982 AC: 1495AN: 152270Hom.: 11 Cov.: 32 AF XY: 0.00939 AC XY: 699AN XY: 74454
ClinVar
Submissions by phenotype
not provided Benign:7
Likely benign, criteria provided, single submitter | clinical testing | Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics | Sep 14, 2016 | - - |
Likely benign, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, University Medical Center Utrecht | - | - - |
Benign, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | May 02, 2017 | Variant summary: The DHCR7 c.99-4G>A variant involves the alteration of a non-conserved intronic nucleotide. One in silico tool predicts a polymorphism outcome for this variant. 5/5 splice prediction tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. This variant was found in 628/37018 control chromosomes (8 homozygotes) at a frequency of 0.0169647, which is approximately 4 times the estimated maximal expected allele frequency of a pathogenic DHCR7 variant (0.0043301), suggesting this variant is likely a benign polymorphism. The variant of interest has been reported in affected individuals without strong evidence for causality. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as benign/likely benign. Taken together, this variant is classified as benign. - |
Likely benign, no assertion criteria provided | clinical testing | Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) | - | - - |
Benign, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Apr 01, 2024 | DHCR7: BP4, BS1, BS2 - |
Benign, criteria provided, single submitter | clinical testing | Mendelics | May 28, 2019 | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Dec 17, 2018 | This variant is associated with the following publications: (PMID: 25040602, 23042628) - |
Smith-Lemli-Opitz syndrome Benign:4
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 31, 2024 | - - |
Benign, no assertion criteria provided | clinical testing | Natera, Inc. | May 20, 2019 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Apr 27, 2017 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. - |
Benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Feb 03, 2020 | - - |
not specified Benign:3
Likely benign, criteria provided, single submitter | clinical testing | Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital | Jul 05, 2017 | BS1, BP6; This alteration has an allele frequency that is greater than expected for the associated disease, and was reported as a benign/likely benign alteration by a reputable source (ClinVar or other correspondence from a clinical testing laboratory). - |
Benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
Benign, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Apr 16, 2013 | - - |
Inborn genetic diseases Benign:1
Benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 13, 2016 | This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at