6-151808175-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000125.4(ESR1):c.263C>T(p.Ala88Val) variant causes a missense change. The variant allele was found at a frequency of 0.000000699 in 1,431,404 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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: 7.0e-7 (0 hom.)
• Consequence: ESR1 NM_000125.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.84

Genes affected

ESR1 (HGNC:3467): (estrogen receptor 1) This gene encodes an estrogen receptor and ligand-activated transcription factor. The canonical protein contains an N-terminal ligand-independent transactivation domain, a central DNA binding domain, a hinge domain, and a C-terminal ligand-dependent transactivation domain. The protein localizes to the nucleus where it may form either a homodimer or a heterodimer with estrogen receptor 2. The protein encoded by this gene regulates the transcription of many estrogen-inducible genes that play a role in growth, metabolism, sexual development, gestation, and other reproductive functions and is expressed in many non-reproductive tissues. The receptor encoded by this gene plays a key role in breast cancer, endometrial cancer, and osteoporosis. This gene is reported to have dozens of transcript variants due to the use of alternate promoters and alternative splicing, however, the full-length nature of many of these variants remain uncertain. [provided by RefSeq, Jul 2020]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.4169163).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ESR1	NM_000125.4	c.263C>T	p.Ala88Val	missense_variant	1/8	ENST00000206249.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ESR1	ENST00000206249.8	c.263C>T	p.Ala88Val	missense_variant	1/8	1	NM_000125.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.99e-7 AC: 1 AN: 1431404 Hom.: 0 Cov.: 36 AF XY: 0.00000141 AC XY: 1 AN XY: 708928

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: 0.00

Gnomad4 OTH exome AF: 0.0000169

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

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

Jan 03, 2024

The c.263C>T (p.A88V) alteration is located in exon 1 (coding exon 1) of the ESR1 gene. This alteration results from a C to T substitution at nucleotide position 263, causing the alanine (A) at amino acid position 88 to be replaced by a valine (V). 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	0.10
BayesDel_addAF	Benign	-0.095	T
BayesDel_noAF	Benign	-0.37
Cadd	Benign	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.32	T;T;T;T;T;T;T
Eigen	Benign	0.094
Eigen_PC	Benign	0.062
FATHMM_MKL	Uncertain	0.83	D
M_CAP	Benign	0.052	D
MetaRNN	Benign	0.42	T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L;L;.;L;L;.;.
MutationTaster	Benign	0.82	N;N;N;N;N;N
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-0.35	N;N;N;N;N;N;N
REVEL	Benign	0.075
Sift	Benign	0.071	T;T;D;T;T;D;D
Sift4G	Benign	0.20	T;T;D;T;T;T;D
Polyphen		0.84	P;P;.;P;P;D;.
Vest4		0.23
MutPred		0.65		Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);Loss of glycosylation at S84 (P = 0.0924);
MVP		0.55
MPC		0.74
ClinPred		0.86	D
GERP RS		3.1
Varity_R		0.072
gMVP		0.46

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: rs1778178459; hg19: chr6-152129310;