4-134200329-C-A

Position:

• chr4-134200329-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001114734.2(PABPC4L):​c.691G>T​(p.Gly231Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000347 in 1,442,768 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000035 (0 hom.)
• Consequence: PABPC4L NM_001114734.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.87

Genes affected

PABPC4L (HGNC:31955): (poly(A) binding protein cytoplasmic 4 like) Predicted to enable mRNA 3'-UTR binding activity; poly(A) binding activity; and poly(U) RNA binding activity. Predicted to be part of ribonucleoprotein complex. Predicted to be active in cytoplasmic stress granule; cytosol; and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PABPC4L	NM_001114734.2	c.691G>T	p.Gly231Cys	missense_variant	2/2	ENST00000421491.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PABPC4L	ENST00000421491.4	c.691G>T	p.Gly231Cys	missense_variant	2/2	3	NM_001114734.2	P1
	ENST00000658435.1	n.412-96812G>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000917 AC: 2 AN: 218064 Hom.: 0 AF XY: 0.0000170 AC XY: 2 AN XY: 117540

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000734

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000347 AC: 5 AN: 1442768 Hom.: 0 Cov.: 55 AF XY: 0.00000559 AC XY: 4 AN XY: 715712

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: 0.0000600

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000828 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 30, 2022

The c.865G>T (p.G289C) alteration is located in exon 2 (coding exon 1) of the PABPC4L gene. This alteration results from a G to T substitution at nucleotide position 865, causing the glycine (G) at amino acid position 289 to be replaced by a cysteine (C). 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	0.34
BayesDel_addAF	Uncertain	0.046	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	24
DANN	Benign	0.93
DEOGEN2	Benign	0.097	T
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.14	D
MetaRNN	Uncertain	0.48	T
MutationAssessor	Uncertain	2.7	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.64	T
Sift4G	Benign	0.15	T
Polyphen		0.18	B
Vest4		0.76
MVP		0.60
GERP RS		3.3
Varity_R		0.36
gMVP		0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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

Other links and lift over

dbSNP: rs764605454; hg19: chr4-135121484;