chr15-24962118-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_001394334.1(SNURF):c.19C>T(p.Arg7Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,461,674 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.000012 ( 0 hom. )
Consequence
SNURF
NM_001394334.1 missense
NM_001394334.1 missense
Scores
1
2
11
Clinical Significance
Conservation
PhyloP100: 1.11
Genes affected
SNURF (HGNC:11171): (SNRPN upstream open reading frame) This gene is located within the Prader-Willi Syndrome critical region on chromosome 15. Transcripts produced from this gene initiate at an imprinting center and are paternally-imprinted. These transcripts may be bicistronic and also encode SNRPN (small nuclear ribonucleoprotein polypeptide N) from a downstream open reading frame. The small protein represented by this gene is encoded by an evolutionarily-conserved upstream open reading frame and is localized to the nucleus. Extensive alternative splicing and promoter usage occurs in this region and the full-length nature of some of these transcripts has not been determined. Alterations in the imprinting center are associated with parental imprint switch failure, which may cause Angelman syndrome or Prader-Willi syndrome. [provided by RefSeq, Mar 2017]
SNRPN (HGNC:11164): (small nuclear ribonucleoprotein polypeptide N) This gene is located within the Prader-Willi Syndrome critical region on chromosome 15 and is imprinted and expressed from the paternal allele. It encodes a component of the small nuclear ribonucleoprotein complex, which functions in pre-mRNA processing and may contribute to tissue-specific alternative splicing. Alternative promoter use and alternative splicing result in a multitude of transcript variants encoding the same protein. Transcript variants that initiate at the CpG island-associated imprinting center may be bicistronic and also encode the SNRPN upstream reading frame protein (SNURF) from an upstream open reading frame. In addition, long spliced transcripts for small nucleolar RNA host gene 14 (SNHG14) may originate from the promoters at this locus and share exons with this gene. Alterations in this region are associated with parental imprint switch failure, which may cause Angelman syndrome or Prader-Willi syndrome. [provided by RefSeq, Mar 2017]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (MetaRNN=0.21776396).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SNURF | NM_001394334.1 | c.19C>T | p.Arg7Cys | missense_variant | 2/3 | ENST00000577949.6 | |
SNRPN | NM_003097.6 | c.-386C>T | 5_prime_UTR_variant | 2/10 | ENST00000390687.9 | ||
SNHG14 | NR_146177.1 | n.517C>T | non_coding_transcript_exon_variant | 5/148 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SNURF | ENST00000577949.6 | c.19C>T | p.Arg7Cys | missense_variant | 2/3 | 2 | NM_001394334.1 | P1 | |
SNRPN | ENST00000390687.9 | c.-386C>T | 5_prime_UTR_variant | 2/10 | 1 | NM_003097.6 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
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Cov.:
32
GnomAD3 exomes AF: 0.00000803 AC: 2AN: 249012Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 134800
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GnomAD4 exome AF: 0.0000116 AC: 17AN: 1461674Hom.: 0 Cov.: 31 AF XY: 0.00000825 AC XY: 6AN XY: 727156
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GnomAD4 genome ? Cov.: 32
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Autism spectrum disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Benign
DEOGEN2
Benign
T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
D
M_CAP
Benign
T
MetaRNN
Benign
T;T
MetaSVM
Benign
T
MutationTaster
Benign
D;D;D;D;D;D;D;D;D;D
PrimateAI
Pathogenic
D
Sift4G
Uncertain
D;D
Polyphen
B;B
Vest4
MutPred
Loss of MoRF binding (P = 0.0208);Loss of MoRF binding (P = 0.0208);
MVP
ClinPred
T
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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Calibrated prediction
Score
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at