chr5-41000332-A-G

Variant names:

• chr5-41000332-A-G
• rs920158035
• NM_173489.5:c.4370T>C

Variant summary

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

The NM_173489.5(MROH2B):​c.4370T>C​(p.Met1457Thr) 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 1,461,496 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: 6.8e-7 (0 hom.)
• Consequence: MROH2B NM_173489.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.940

Genes affected

MROH2B (HGNC:26857): (maestro heat like repeat family member 2B) Predicted to be involved in protein kinase A signaling. Predicted to be located in acrosomal vesicle and sperm midpiece. [provided by Alliance of Genome Resources, Apr 2022]

C7 (HGNC:1346): (complement C7) This gene encodes a serum glycoprotein that forms a membrane attack complex together with complement components C5b, C6, C8, and C9 as part of the terminal complement pathway of the innate immune system. The protein encoded by this gene contains a cholesterol-dependent cytolysin/membrane attack complex/perforin-like (CDC/MACPF) domain and belongs to a large family of structurally related molecules that form pores involved in host immunity and bacterial pathogenesis. This protein initiates membrane attack complex formation by binding the C5b-C6 subcomplex and inserts into the phospholipid bilayer, serving as a membrane anchor. Mutations in this gene are associated with a rare disorder called C7 deficiency. [provided by RefSeq, Nov 2016]

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=0.057433963).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MROH2B	NM_173489.5	c.4370T>C	p.Met1457Thr	missense_variant	Exon 39 of 42	ENST00000399564.5	NP_775760.3
MROH2B	XM_011513952.2	c.4370T>C	p.Met1457Thr	missense_variant	Exon 39 of 43		XP_011512254.1
MROH2B	XM_011513953.2	c.4184T>C	p.Met1395Thr	missense_variant	Exon 38 of 41		XP_011512255.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MROH2B	ENST00000399564.5	c.4370T>C	p.Met1457Thr	missense_variant	Exon 39 of 42	1	NM_173489.5	ENSP00000382476.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000403 AC: 1 AN: 248190 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 134594

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000291

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461496 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 727018

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

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: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	14
DANN	Benign	0.60
DEOGEN2	Benign	0.010	T;T
Eigen	Benign	-0.85
Eigen_PC	Benign	-0.76
FATHMM_MKL	Benign	0.014	N
LIST_S2	Benign	0.36	T;T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.057	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	.;N
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-0.65	N;N
REVEL	Benign	0.083
Sift	Benign	0.34	T;T
Sift4G	Benign	0.28	T;T
Polyphen		0.0060	.;B
Vest4		0.13
MutPred		0.53		.;Loss of stability (P = 0.0697);
MVP		0.055
MPC		0.021
ClinPred		0.032	T
GERP RS		2.3
Varity_R		0.061
gMVP		0.19

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

Publications

LitVar

Other links and lift over

dbSNP: rs920158035; hg19: chr5-41000434;