NM_000733.4:c.103+1G>A
Variant summary
Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1_ModeratePP5_Very_Strong
The NM_000733.4(CD3E):c.103+1G>A variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000023 in 1,611,166 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Consequence
NM_000733.4 splice_donor, intron
Scores
Clinical Significance
Conservation
Publications
- immunodeficiency 18Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
- T-B+ severe combined immunodeficiency due to CD3delta/CD3epsilon/CD3zetaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 10 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000526 AC: 8AN: 152144Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000199 AC: 5AN: 251410 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.0000199 AC: 29AN: 1459022Hom.: 0 Cov.: 29 AF XY: 0.0000193 AC XY: 14AN XY: 726004 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000526 AC: 8AN: 152144Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74314 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Immunodeficiency 18 Pathogenic:4
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This sequence change affects a donor splice site in intron 5 of the CD3E gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in CD3E are known to be pathogenic (PMID: 8490660, 15546002). This variant is present in population databases (rs201543770, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with CD3E-related conditions. ClinVar contains an entry for this variant (Variation ID: 835442). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -
Canonical splice site variant in CD3E (c.103+1G>A), abolishes the donor site of intron 2. Expected to result in aberrant splicing and loss of function (PVS1), which is a known mechanism in CD3E-related immunodeficiency (OMIM #615615). Variant is absent from population databases (PM2) and has been reported in affected individuals. Detected in homozygous state. Classified as Likely Pathogenic. Meets ACMG criteria: PVS1, PM2, PP4. -
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at