rs1450659

Variant names:

• chr5-41015201-C-G
• rs1450659
• NM_173489.5:c.2982+180G>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_173489.5(MROH2B):​c.2982+180G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0816 in 152,264 control chromosomes in the GnomAD database, including 705 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 0.082 (705 hom., cov: 32)
• Consequence: MROH2B NM_173489.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.40
• Publications: 4 publications found

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]

C7 Gene-Disease associations (from GenCC):

• complement component 7 deficiency

  Inheritance: AR Classification: STRONG Submitted by: Ambry Genetics, Illumina, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.118 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MROH2B	NM_173489.5	c.2982+180G>C		intron_variant	Intron 29 of 41	ENST00000399564.5	NP_775760.3
MROH2B	XM_011513952.2	c.2982+180G>C		intron_variant	Intron 29 of 42		XP_011512254.1
MROH2B	XM_011513953.2	c.2796+180G>C		intron_variant	Intron 28 of 40		XP_011512255.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MROH2B	ENST00000399564.5	c.2982+180G>C		intron_variant	Intron 29 of 41	1	NM_173489.5	ENSP00000382476.4

Frequencies

GnomAD3 genomes AF: 0.0818 AC: 12439 AN: 152146 Hom.: 705 Cov.: 32

Gnomad AFR AF: 0.0254

Gnomad AMI AF: 0.0921

Gnomad AMR AF: 0.0570

Gnomad ASJ AF: 0.0908

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.0518

Gnomad FIN AF: 0.142

Gnomad MID AF: 0.142

Gnomad NFE AF: 0.120

Gnomad OTH AF: 0.0761

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0816 AC: 12425 AN: 152264 Hom.: 705 Cov.: 32 AF XY: 0.0801 AC XY: 5963 AN XY: 74444

African (AFR) AF: 0.0254 AC: 1054 AN: 41560

American (AMR) AF: 0.0568 AC: 870 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.0908 AC: 315 AN: 3470

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5182

South Asian (SAS) AF: 0.0504 AC: 243 AN: 4822

European-Finnish (FIN) AF: 0.142 AC: 1508 AN: 10594

Middle Eastern (MID) AF: 0.139 AC: 41 AN: 294

European-Non Finnish (NFE) AF: 0.120 AC: 8150 AN: 68014

Other (OTH) AF: 0.0753 AC: 159 AN: 2112

Alfa AF: 0.0997 Hom.: 115

Bravo AF: 0.0739

Asia WGS AF: 0.0260 AC: 94 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.032
DANN	Benign	0.39
PhyloP100		-1.4
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1450659; hg19: chr5-41015303;