20-44912692-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001372179.1(PABPC1L):​c.226A>T​(p.Met76Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,668 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PABPC1L
NM_001372179.1 missense

Scores

1
18

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.44
Variant links:
Genes affected
PABPC1L (HGNC:15797): (poly(A) binding protein cytoplasmic 1 like) This gene belongs to the polyadenylate-binding protein type-1 family of proteins. Members of this family bind to the polyA tails of mRNAs to regulate mRNA stability and translation. The mouse ortholog of this gene is required for female fertility. In human, expression of a functional protein is regulated by alternative splicing. The protein-coding splice variant for this gene is abundantly expressed in human oocytes, while a noncoding splice variant subject to nonsense-mediated decay is the predominant splice variant expressed in somatic tissues. [provided by RefSeq, Aug 2019]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.053640366).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
PABPC1LNM_001372179.1 linkuse as main transcriptc.226A>T p.Met76Leu missense_variant 2/15 ENST00000217073.7 NP_001359108.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
PABPC1LENST00000217073.7 linkuse as main transcriptc.226A>T p.Met76Leu missense_variant 2/155 NM_001372179.1 ENSP00000217073.3 A0A6Q8JFT6
PABPC1LENST00000537323.5 linkuse as main transcriptn.226A>T non_coding_transcript_exon_variant 2/141 ENSP00000445661.1 Q4VXU2-2
PABPC1LENST00000255136.8 linkuse as main transcriptc.226A>T p.Met76Leu missense_variant 2/155 ENSP00000255136.3 Q4VXU2-1
PABPC1LENST00000217074.9 linkuse as main transcriptn.205A>T non_coding_transcript_exon_variant 2/145 ENSP00000217074.5 A0A6Q8JFV4

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461668
Hom.:
0
Cov.:
30
AF XY:
0.00000138
AC XY:
1
AN XY:
727144
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
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 submitterclinical testingAmbry GeneticsMar 19, 2024The c.226A>T (p.M76L) alteration is located in exon 2 (coding exon 2) of the PABPC1L gene. This alteration results from a A to T substitution at nucleotide position 226, causing the methionine (M) at amino acid position 76 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.082
BayesDel_addAF
Benign
-0.26
T
BayesDel_noAF
Benign
-0.61
CADD
Benign
17
DANN
Benign
0.74
DEOGEN2
Benign
0.0055
.;T;.;T
Eigen
Benign
-0.87
Eigen_PC
Benign
-0.67
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Benign
0.76
.;T;T;.
M_CAP
Benign
0.0032
T
MetaRNN
Benign
0.054
T;T;T;T
MetaSVM
Benign
-0.95
T
MutationAssessor
Benign
-0.070
N;N;N;N
PrimateAI
Benign
0.41
T
PROVEAN
Benign
-0.28
N;N;N;N
REVEL
Benign
0.053
Sift
Benign
0.75
T;T;T;T
Sift4G
Benign
0.35
T;T;T;T
Polyphen
0.0
.;B;.;B
Vest4
0.24
MutPred
0.35
Loss of methylation at K78 (P = 0.0853);Loss of methylation at K78 (P = 0.0853);Loss of methylation at K78 (P = 0.0853);Loss of methylation at K78 (P = 0.0853);
MVP
0.17
MPC
0.23
ClinPred
0.13
T
GERP RS
0.35
Varity_R
0.042
gMVP
0.19

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs2066713239; hg19: chr20-43541333; API