8-6536444-G-A

Variant names:

• chr8-6536444-G-A
• rs2442600
• NM_024596.5:c.2214+36515G>A

Variant summary

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

The NM_024596.5(MCPH1):​c.2214+36515G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.358 in 151,866 control chromosomes in the GnomAD database, including 10,045 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 0.36 (10045 hom., cov: 31)
• Consequence: MCPH1 NM_024596.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.271
• Publications: 4 publications found

Genes affected

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]

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]

ANGPT2 Gene-Disease associations (from GenCC):

• lymphatic malformation 10

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.396 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024596.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCPH1	NM_024596.5	MANE Select	c.2214+36515G>A		intron	N/A	NP_078872.3
	ANGPT2	NM_001118887.2	MANE Select	c.289-3957C>T		intron	N/A	NP_001112359.1
	MCPH1	NM_001322042.2		c.2214+36515G>A		intron	N/A	NP_001308971.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCPH1	ENST00000344683.10	TSL:1 MANE Select	c.2214+36515G>A		intron	N/A	ENSP00000342924.5
	ANGPT2	ENST00000629816.3	TSL:1 MANE Select	c.289-3957C>T		intron	N/A	ENSP00000486858.2
	ANGPT2	ENST00000325203.9	TSL:1	c.289-3957C>T		intron	N/A	ENSP00000314897.5

Frequencies

GnomAD3 genomes AF: 0.358 AC: 54292 AN: 151748 Hom.: 10025 Cov.: 31

Gnomad AFR AF: 0.315

Gnomad AMI AF: 0.310

Gnomad AMR AF: 0.379

Gnomad ASJ AF: 0.362

Gnomad EAS AF: 0.127

Gnomad SAS AF: 0.282

Gnomad FIN AF: 0.378

Gnomad MID AF: 0.225

Gnomad NFE AF: 0.400

Gnomad OTH AF: 0.339

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

GnomAD4 genome AF: 0.358 AC: 54354 AN: 151866 Hom.: 10045 Cov.: 31 AF XY: 0.353 AC XY: 26201 AN XY: 74216

African (AFR) AF: 0.316 AC: 13074 AN: 41404

American (AMR) AF: 0.379 AC: 5787 AN: 15262

Ashkenazi Jewish (ASJ) AF: 0.362 AC: 1252 AN: 3462

East Asian (EAS) AF: 0.127 AC: 653 AN: 5160

South Asian (SAS) AF: 0.281 AC: 1354 AN: 4814

European-Finnish (FIN) AF: 0.378 AC: 3972 AN: 10512

Middle Eastern (MID) AF: 0.218 AC: 64 AN: 294

European-Non Finnish (NFE) AF: 0.400 AC: 27208 AN: 67946

Other (OTH) AF: 0.337 AC: 709 AN: 2106

Alfa AF: 0.390 Hom.: 4093

Bravo AF: 0.352

Asia WGS AF: 0.214 AC: 750 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	5.6
DANN	Benign	0.80
PhyloP100		0.27
Mutation Taster		=99/1	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: rs2442600; hg19: chr8-6393965;