chr2-51028084-G-A
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_001330078.2(NRXN1):c.190C>T(p.Arg64Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000315 in 1,587,002 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R64S) has been classified as Likely benign.
Frequency
Consequence
NM_001330078.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NRXN1 | NM_001330078.2 | c.190C>T | p.Arg64Cys | missense_variant | 2/23 | ENST00000401669.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NRXN1 | ENST00000401669.7 | c.190C>T | p.Arg64Cys | missense_variant | 2/23 | 5 | NM_001330078.2 | A1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152194Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000141 AC: 3AN: 212898Hom.: 0 AF XY: 0.0000170 AC XY: 2AN XY: 117890
GnomAD4 exome AF: 0.00000279 AC: 4AN: 1434808Hom.: 0 Cov.: 31 AF XY: 0.00000421 AC XY: 3AN XY: 711896
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152194Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74344
ClinVar
Submissions by phenotype
Pitt-Hopkins-like syndrome 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Feb 26, 2020 | 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with NRXN1-related conditions. This variant is present in population databases (rs201566733, ExAC 0.003%). This sequence change replaces arginine with cysteine at codon 64 of the NRXN1 protein (p.Arg64Cys). The arginine residue is highly conserved and there is a large physicochemical difference between arginine and cysteine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at