NM_006770.4:c.500C>A

Variant names:

• chr2-118974372-C-A
• NM_006770.4:c.500C>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006770.4(MARCO):​c.500C>A​(p.Ala167Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,516 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: MARCO NM_006770.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.684

Genes affected

MARCO (HGNC:6895): (macrophage receptor with collagenous structure) The protein encoded by this gene is a member of the class A scavenger receptor family and is part of the innate antimicrobial immune system. The protein may bind both Gram-negative and Gram-positive bacteria via an extracellular, C-terminal, scavenger receptor cysteine-rich (SRCR) domain. In addition to short cytoplasmic and transmembrane domains, there is an extracellular spacer domain and a long, extracellular collagenous domain. The protein may form a trimeric molecule by the association of the collagenous domains of three identical polypeptide chains. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.080498695).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MARCO	NM_006770.4	c.500C>A	p.Ala167Asp	missense_variant	Exon 5 of 17	ENST00000327097.5	NP_006761.1
MARCO	XM_011512082.3	c.500C>A	p.Ala167Asp	missense_variant	Exon 5 of 17		XP_011510384.1
MARCO	XM_011512083.4	c.137C>A	p.Ala46Asp	missense_variant	Exon 2 of 14		XP_011510385.1
MARCO	XM_017005171.3	c.500C>A	p.Ala167Asp	missense_variant	Exon 5 of 9		XP_016860660.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MARCO	ENST00000327097.5	c.500C>A	p.Ala167Asp	missense_variant	Exon 5 of 17	1	NM_006770.4	ENSP00000318916.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456516 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 723944

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: 9.01e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	0.21
DANN	Benign	0.50
DEOGEN2	Benign	0.25	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.080	N
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.080	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.11	N
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-0.21	N
REVEL	Benign	0.087
Sift	Benign	0.54	T
Sift4G	Benign	0.61	T
Polyphen		0.45	P
Vest4		0.24
MutPred		0.27		Loss of glycosylation at P170 (P = 0.1134);
MVP		0.38
MPC		0.35
ClinPred		0.14	T
GERP RS		-2.1
Varity_R		0.072
gMVP		0.15

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-119731948;