chr20-57329941-C-G
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_012444.3(SPO11):c.74C>G(p.Ala25Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
SPO11
NM_012444.3 missense
NM_012444.3 missense
Scores
2
17
Clinical Significance
Conservation
PhyloP100: 1.09
Genes affected
SPO11 (HGNC:11250): (SPO11 initiator of meiotic double strand breaks) Meiotic recombination and chromosome segregation require the formation of double-strand breaks (DSBs) in paired chromosome homologs. During meiosis in yeast, a meiotic recombination protein is covalently-linked to the 5' end of DSBs and is essential for the formation of DSBs. The protein encoded by this gene is similar in sequence and conserved features to the yeast meiotic recombination protein. The encoded protein belongs to the TOP6A protein family. Several transcript variants encoding different isoforms have been found for this gene, but the full-length nature of only two of them have been described. [provided by RefSeq, Jul 2008]
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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=0.2294341).
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SPO11 | ENST00000371263.8 | c.74C>G | p.Ala25Gly | missense_variant | 1/13 | 1 | NM_012444.3 | ENSP00000360310.3 | ||
| SPO11 | ENST00000345868.8 | c.74C>G | p.Ala25Gly | missense_variant | 1/12 | 1 | ENSP00000316034.4 | |||
| SPO11 | ENST00000371260.8 | c.74C>G | p.Ala25Gly | missense_variant | 1/12 | 5 | ENSP00000360307.4 | |||
| SPO11 | ENST00000418127.5 | c.8C>G | p.Ala3Gly | missense_variant | 1/10 | 3 | ENSP00000413185.1 |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 27, 2024 | The c.74C>G (p.A25G) alteration is located in exon 1 (coding exon 1) of the SPO11 gene. This alteration results from a C to G substitution at nucleotide position 74, causing the alanine (A) at amino acid position 25 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T;.;.;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Benign
T;T;T;T
M_CAP
Benign
T
MetaRNN
Benign
T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
L;L;.;.
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N;N
REVEL
Benign
Sift
Benign
T;D;D;D
Sift4G
Benign
T;T;T;T
Polyphen
B;P;.;.
Vest4
MutPred
Loss of MoRF binding (P = 0.1449);Loss of MoRF binding (P = 0.1449);Loss of MoRF binding (P = 0.1449);.;
MVP
MPC
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.