18-21384214-C-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PP2 BP4_Moderate

The NM_001142966.3(GREB1L):c.166C>A(p.Pro56Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000207 in 1,548,724 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: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000022 (0 hom.)
• Consequence: GREB1L NM_001142966.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.43

Genes affected

GREB1L (HGNC:31042): (GREB1 like retinoic acid receptor coactivator) Acts upstream of or within kidney development. Predicted to be integral component of membrane. Implicated in autosomal dominant nonsyndromic deafness and renal agenesis. [provided by Alliance of Genome Resources, Apr 2022]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PP2: Missense variant where missense usually causes diseases, GREB1L
• BP4: Computational evidence support a benign effect (MetaRNN=0.19347319).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GREB1L	NM_001142966.3	c.166C>A	p.Pro56Thr	missense_variant	4/33	ENST00000424526.7
LOC101927521	XR_001753366.2	n.245-3539G>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GREB1L	ENST00000424526.7	c.166C>A	p.Pro56Thr	missense_variant	4/33	5	NM_001142966.3
	ENST00000584611.1	n.289+3299G>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152138 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000222 AC: 31 AN: 1396586 Hom.: 0 Cov.: 30 AF XY: 0.0000218 AC XY: 15 AN XY: 688906

Gnomad4 AFR exome AF: 0.0000317

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: 0.0000269

Gnomad4 OTH exome AF: 0.0000173

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152138 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74330

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000658 Hom.: 0

Bravo AF: 0.0000264

ExAC AF: 0.0000411 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Apr 12, 2022

This sequence change replaces proline, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 56 of the GREB1L protein (p.Pro56Thr). This variant is present in population databases (rs753311521, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with GREB1L-related conditions. 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: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). 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. -

GREB1L-related disorder Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 08, 2023

The GREB1L c.166C>A variant is predicted to result in the amino acid substitution p.Pro56Thr. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.024	T
BayesDel_noAF	Benign	-0.19
Cadd	Uncertain	26
Dann	Uncertain	0.99
DEOGEN2	Benign	0.011	T;.;T
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.83	T;T;.
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.19	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.55	N;N;N
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.79	T
PROVEAN	Uncertain	-2.4	N;D;.
REVEL	Benign	0.25
Sift	Uncertain	0.0090	D;D;.
Sift4G	Uncertain	0.036	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.35
MVP		0.13
ClinPred		0.75	D
GERP RS		6.0
Varity_R		0.21
gMVP		0.39

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

Other links and lift over

dbSNP: rs753311521; hg19: chr18-18964175;