rs2922895

chr8-6522411-G-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_024596.5(MCPH1):c.2214+22482G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.412 in 151,798 control chromosomes in the GnomAD database, including 13,038 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 0.41 (13038 hom., cov: 31)
• Consequence: MCPH1 NM_024596.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.658

Genes affected

ANGPT2 (HGNC:485): (angiopoietin 2) This gene belongs to the angiopoietin family of growth factors. The protein encoded by this gene is an antagonist of angiopoietin 1, and both angiopoietin 1 and angiopoietin 2 are ligands for the endothelial TEK receptor tyrosine kinase. Angiopoietin 2 is upregulated in multiple inflammatory diseases and is implicated in the direct control of inflammation-related signaling pathways. The encoded protein affects angiogenesis during embryogenesis and tumorigenesis, disrupts the vascular remodeling ability of angiopoietin 1, and may induce endothelial cell apoptosis. This gene serves a prognostic biomarker for acute respiratory distress syndrome. [provided by RefSeq, Aug 2020]

MCPH1 (HGNC:6954): (microcephalin 1) This gene encodes a DNA damage response protein. The encoded protein may play a role in G2/M checkpoint arrest via maintenance of inhibitory phosphorylation of cyclin-dependent kinase 1. Mutations in this gene have been associated with primary autosomal recessive microcephaly 1 and premature chromosome condensation syndrome. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.06).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.428 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ANGPT2	NM_001118887.2	c.567-1001C>G		intron_variant		ENST00000629816.3
MCPH1	NM_024596.5	c.2214+22482G>C		intron_variant		ENST00000344683.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MCPH1	ENST00000344683.10	c.2214+22482G>C		intron_variant		1	NM_024596.5	P1
ANGPT2	ENST00000629816.3	c.567-1001C>G		intron_variant		1	NM_001118887.2	P4

Frequencies

GnomAD3 genomes AF: 0.412 AC: 62484 AN: 151680 Hom.: 13028 Cov.: 31

Gnomad AFR AF: 0.433

Gnomad AMI AF: 0.351

Gnomad AMR AF: 0.331

Gnomad ASJ AF: 0.403

Gnomad EAS AF: 0.240

Gnomad SAS AF: 0.378

Gnomad FIN AF: 0.414

Gnomad MID AF: 0.509

Gnomad NFE AF: 0.432

Gnomad OTH AF: 0.439

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

GnomAD4 genome AF: 0.412 AC: 62528 AN: 151798 Hom.: 13038 Cov.: 31 AF XY: 0.408 AC XY: 30256 AN XY: 74170

Gnomad4 AFR AF: 0.434

Gnomad4 AMR AF: 0.331

Gnomad4 ASJ AF: 0.403

Gnomad4 EAS AF: 0.240

Gnomad4 SAS AF: 0.376

Gnomad4 FIN AF: 0.414

Gnomad4 NFE AF: 0.432

Gnomad4 OTH AF: 0.434

Alfa AF: 0.421 Hom.: 1694

Bravo AF: 0.408

Asia WGS AF: 0.301 AC: 1048 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.1
Cadd	Benign	0.59
Dann	Benign	0.37

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: rs2922895; hg19: chr8-6379932;