8-6621527-T-C

Variant names:

• chr8-6621527-T-C
• rs587783738
• NM_024596.5:c.2288T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_024596.5(MCPH1):​c.2288T>C​(p.Phe763Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: MCPH1 NM_024596.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.17
• Publications: 0 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]

MCPH1-AS1 (HGNC:51655): (MCPH1 antisense RNA 1)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.981

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.2288T>C	p.Phe763Ser	missense	Exon 13 of 14	NP_078872.3
	MCPH1	NM_001322042.2		c.2288T>C	p.Phe763Ser	missense	Exon 13 of 15	NP_001308971.2
	MCPH1	NM_001410917.1		c.2288T>C	p.Phe763Ser	missense	Exon 13 of 14	NP_001397846.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCPH1	ENST00000344683.10	TSL:1 MANE Select	c.2288T>C	p.Phe763Ser	missense	Exon 13 of 14	ENSP00000342924.5
	MCPH1	ENST00000692836.1		c.2288T>C	p.Phe763Ser	missense	Exon 13 of 13	ENSP00000509971.1
	MCPH1	ENST00000689348.1		c.2288T>C	p.Phe763Ser	missense	Exon 13 of 15	ENSP00000509554.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 51

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Microcephaly 1, primary, autosomal recessive Uncertain:1

Jun 26, 2014

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.36
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.91	D
M_CAP	Uncertain	0.25	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.70	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		4.2
PrimateAI	Uncertain	0.58	T
PROVEAN	Pathogenic	-5.3	D
REVEL	Pathogenic	0.79
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.86
MutPred		0.82		Gain of disorder (P = 0.0032)
MVP		0.98
ClinPred		0.99	D
GERP RS		4.2
Varity_R		0.97
gMVP		0.79
Mutation Taster		=42/58	disease causing

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: rs587783738; hg19: chr8-6479048;