chr12-6814956-A-G

Position:

• chr12-6814956-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_000616.5(CD4):​c.571A>G​(p.Lys191Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00117 in 1,613,414 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

• Frequency:
  • Genomes: 𝑓 0.0060 (10 hom., cov: 31)
  • Exomes 𝑓: 0.00066 (4 hom.)
• Consequence: CD4 NM_000616.5 missense
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.0130

Genes affected

CD4 (HGNC:1678): (CD4 molecule) This gene encodes the CD4 membrane glycoprotein of T lymphocytes. The CD4 antigen acts as a coreceptor with the T-cell receptor on the T lymphocyte to recognize antigens displayed by an antigen presenting cell in the context of class II MHC molecules. The CD4 antigen is also a primary receptor for entry of the human immunodeficiency virus through interactions with the HIV Env gp120 subunit. This gene is expressed not only in T lymphocytes, but also in B cells, macrophages, granulocytes, as well as in various regions of the brain. The protein functions to initiate or augment the early phase of T-cell activation, and may function as an important mediator of indirect neuronal damage in infectious and immune-mediated diseases of the central nervous system. Multiple alternatively spliced transcript variants encoding different isoforms have been identified in this gene. [provided by RefSeq, May 2020]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0032571852).
• BP6: Variant 12-6814956-A-G is Benign according to our data. Variant chr12-6814956-A-G is described in ClinVar as [Benign]. Clinvar id is 714505.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00604 (920/152210) while in subpopulation AFR AF= 0.0207 (858/41530). AF 95% confidence interval is 0.0195. There are 10 homozygotes in gnomad4. There are 415 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CD4	NM_000616.5	c.571A>G	p.Lys191Glu	missense_variant	5/10	ENST00000011653.9	NP_000607.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD4	ENST00000011653.9	c.571A>G	p.Lys191Glu	missense_variant	5/10	1	NM_000616.5	ENSP00000011653	P1

Frequencies

GnomAD3 genomes AF: 0.00605 AC: 920 AN: 152092 Hom.: 10 Cov.: 31

Gnomad AFR AF: 0.0207

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00301

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: 0.000132

Gnomad OTH AF: 0.00335

GnomAD3 exomes AF: 0.00150 AC: 377 AN: 250644 Hom.: 2 AF XY: 0.000856 AC XY: 116 AN XY: 135518

Gnomad AFR exome AF: 0.0198

Gnomad AMR exome AF: 0.00122

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000971

Gnomad OTH exome AF: 0.000328

GnomAD4 exome AF: 0.000658 AC: 961 AN: 1461204 Hom.: 4 Cov.: 31 AF XY: 0.000570 AC XY: 414 AN XY: 726938

Gnomad4 AFR exome AF: 0.0210

Gnomad4 AMR exome AF: 0.00163

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000810

Gnomad4 OTH exome AF: 0.00147

GnomAD4 genome AF: 0.00604 AC: 920 AN: 152210 Hom.: 10 Cov.: 31 AF XY: 0.00558 AC XY: 415 AN XY: 74404

Gnomad4 AFR AF: 0.0207

Gnomad4 AMR AF: 0.00301

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000132

Gnomad4 OTH AF: 0.00331

Alfa AF: 0.00152 Hom.: 1

Bravo AF: 0.00705

ESP6500AA AF: 0.0193 AC: 85

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.00200 AC: 243

Asia WGS AF: 0.00173 AC: 6 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.000178

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	May 29, 2018	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.065
BayesDel_addAF	Benign	-0.65	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	0.18
DANN	Benign	0.35
DEOGEN2	Benign	0.14	T;.
Eigen	Benign	-1.9
Eigen_PC	Benign	-1.9
FATHMM_MKL	Benign	0.029	N
LIST_S2	Benign	0.45	T;T
MetaRNN	Benign	0.0033	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.3	L;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-2.5	N;D
REVEL	Benign	0.022
Sift	Benign	0.11	T;T
Sift4G	Benign	0.20	T;T
Polyphen		0.0	B;B
Vest4		0.086
MVP		0.45
MPC		0.29
ClinPred		0.0092	T
GERP RS		-3.8
Varity_R		0.21
gMVP		0.43

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs28917504; hg19: chr12-6924122;