chr1-149790164-C-A

Variant names:

• chr1-149790164-C-A
• rs1338887
• NM_000566.4:c.670C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000566.4(FCGR1A):​c.670C>A​(p.Gln224Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FCGR1A NM_000566.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.351
• Publications: 0 publications found

Genes affected

FCGR1A (HGNC:3613): (Fc gamma receptor Ia) This gene encodes a protein that plays an important role in the immune response. This protein is a high-affinity Fc-gamma receptor. The gene is one of three related gene family members located on chromosome 1. [provided by RefSeq, Jul 2008]

ENSG00000233030 (HGNC:):

H2BC18 (HGNC:24700): (H2B clustered histone 18) Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. This structure consists of approximately 146 bp of DNA wrapped around a nucleosome, an octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene encodes a replication-dependent histone that is a member of the histone H2B family and is found in a histone cluster on chromosome 1. [provided by RefSeq, Aug 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14519173).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000566.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FCGR1A	NM_000566.4	MANE Select	c.670C>A	p.Gln224Lys	missense	Exon 5 of 6	NP_000557.1	P12314-1
	FCGR1A	NM_001378804.1		c.673C>A	p.Gln225Lys	missense	Exon 5 of 6	NP_001365733.1
	FCGR1A	NM_001378805.1		c.649C>A	p.Gln217Lys	missense	Exon 4 of 5	NP_001365734.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FCGR1A	ENST00000369168.5	TSL:1 MANE Select	c.670C>A	p.Gln224Lys	missense	Exon 5 of 6	ENSP00000358165.4	P12314-1
	ENSG00000233030	ENST00000428289.1	TSL:1	n.1063+1794G>T		intron	N/A
	FCGR1A	ENST00000964516.1		c.760C>A	p.Gln254Lys	missense	Exon 6 of 7	ENSP00000634575.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461660 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727142

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111840

Other (OTH) AF: 0.0000166 AC: 1 AN: 60370

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	11
DANN	Benign	0.79
DEOGEN2	Benign	0.0043	T
Eigen	Benign	-0.63
Eigen_PC	Benign	-0.72
FATHMM_MKL	Benign	0.030	N
LIST_S2	Benign	0.84	T
M_CAP	Benign	0.0024	T
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.3	M
PhyloP100		-0.35
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.45	N
REVEL	Benign	0.13
Sift	Benign	0.090	T
Sift4G	Benign	0.45	T
Polyphen		0.32	B
Vest4		0.13
MutPred		0.70		Loss of catalytic residue at Q224 (P = 0.003)
MVP		0.69
ClinPred		0.14	T
GERP RS		2.5
Varity_R		0.18
gMVP		0.41
Mutation Taster		=89/11	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1338887; hg19: chr1-149761720;