20-46062485-C-T

Position:

• chr20-46062485-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_020967.3(NCOA5):​c.1555G>A​(p.Ala519Thr) 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 1,461,880 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NCOA5 NM_020967.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.57

Genes affected

NCOA5 (HGNC:15909): (nuclear receptor coactivator 5) This gene encodes a coregulator for the alpha and beta estrogen receptors and the orphan nuclear receptor NR1D2. The protein localizes to the nucleus, and is thought to have both coactivator and corepressor functions. Its interaction with nuclear receptors is independent of the AF2 domain on the receptors, which is known to regulate interaction with other coreceptors. Several alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2017]

ACMG classification

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=0.063384).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NCOA5	NM_020967.3	c.1555G>A	p.Ala519Thr	missense_variant	8/8	ENST00000290231.11	NP_066018.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NCOA5	ENST00000290231.11	c.1555G>A	p.Ala519Thr	missense_variant	8/8	1	NM_020967.3	ENSP00000290231.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461880 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727242

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

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 22, 2021

The c.1555G>A (p.A519T) alteration is located in exon 8 (coding exon 7) of the NCOA5 gene. This alteration results from a G to A substitution at nucleotide position 1555, causing the alanine (A) at amino acid position 519 to be replaced by a threonine (T). 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	0.069
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.044	T
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.31
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.0059	T
MetaRNN	Benign	0.063	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.55	N
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-0.18	N
REVEL	Benign	0.021
Sift	Benign	0.083	T
Sift4G	Benign	0.097	T
Polyphen		0.0	B
Vest4		0.098
MutPred		0.18		Gain of glycosylation at A519 (P = 0.0044);
MVP		0.14
MPC		0.74
ClinPred		0.25	T
GERP RS		2.5
Varity_R		0.027
gMVP		0.28

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: rs2084777272; hg19: chr20-44691124;