rs722575

chr5-40998133-C-Achr5-40998133-C-Gchr5-40998133-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_173489.5(MROH2B):c.4677G>T(p.Pro1559=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,610,450 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000066 (1 hom., cov: 32)
  • Exomes 𝑓: 0.000023 (0 hom.)
• Consequence: MROH2B NM_173489.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.636

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 -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.38).
• BP7: Synonymous conserved (PhyloP=-0.636 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MROH2B	NM_173489.5	c.4677G>T	p.Pro1559=	synonymous_variant	42/42	ENST00000399564.5
MROH2B	XM_011513953.2	c.4491G>T	p.Pro1497=	synonymous_variant	41/41
MROH2B	XM_011513952.2	c.*42G>T		3_prime_UTR_variant	43/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MROH2B	ENST00000399564.5	c.4677G>T	p.Pro1559=	synonymous_variant	42/42	1	NM_173489.5	P1

Frequencies

GnomAD3 genomes AF: 0.0000658 AC: 10 AN: 151982 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000459

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000812 AC: 20 AN: 246424 Hom.: 0 AF XY: 0.0000748 AC XY: 10 AN XY: 133680

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000501

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: 0.0000179

Gnomad OTH exome AF: 0.000168

GnomAD4 exome AF: 0.0000233 AC: 34 AN: 1458468 Hom.: 0 Cov.: 33 AF XY: 0.0000220 AC XY: 16 AN XY: 725668

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000382

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: 0.0000117

Gnomad4 OTH exome AF: 0.0000664

GnomAD4 genome AF: 0.0000658 AC: 10 AN: 151982 Hom.: 1 Cov.: 32 AF XY: 0.0000943 AC XY: 7 AN XY: 74212

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.000459

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00

EpiCase AF: 0.0000547

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.38
Cadd	Benign	0.27
Dann	Benign	0.39

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: rs722575; hg19: chr5-40998235;