chr19-38593285-G-T

Variant names:

• chr19-38593285-G-T
• rs951684177
• NM_001042600.3:c.2393C>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001042600.3(MAP4K1):​c.2393C>A​(p.Pro798His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,611,764 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P798A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: MAP4K1 NM_001042600.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.29
• Publications: 0 publications found

Genes affected

MAP4K1 (HGNC:6863): (mitogen-activated protein kinase kinase kinase kinase 1) Enables ATP binding activity and MAP kinase kinase kinase kinase activity. Involved in several processes, including JNK cascade; cellular response to phorbol 13-acetate 12-myristate; and protein phosphorylation. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

RYR1 (HGNC:10483): (ryanodine receptor 1) This gene encodes a ryanodine receptor found in skeletal muscle. The encoded protein functions as a calcium release channel in the sarcoplasmic reticulum but also serves to connect the sarcoplasmic reticulum and transverse tubule. Mutations in this gene are associated with malignant hyperthermia susceptibility, central core disease, and minicore myopathy with external ophthalmoplegia. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

RYR1 Gene-Disease associations (from GenCC):

• malignant hyperthermia, susceptibility to, 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp, Ambry Genetics, ClinGen
• RYR1-related myopathy

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia
• congenital multicore myopathy with external ophthalmoplegia

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
• central core myopathy

  Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• King-Denborough syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• malignant hyperthermia of anesthesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive centronuclear myopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• benign Samaritan congenital myopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• congenital myopathy with myasthenic-like onset

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• lethal multiple pterygium syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3941145).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001042600.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP4K1	NM_001042600.3	MANE Select	c.2393C>A	p.Pro798His	missense	Exon 30 of 31	NP_001036065.1	Q92918-2
	MAP4K1	NM_007181.6		c.2393C>A	p.Pro798His	missense	Exon 30 of 32	NP_009112.1	Q92918-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP4K1	ENST00000396857.7	TSL:5 MANE Select	c.2393C>A	p.Pro798His	missense	Exon 30 of 31	ENSP00000380066.1	Q92918-2
	MAP4K1	ENST00000591517.5	TSL:1	c.2393C>A	p.Pro798His	missense	Exon 30 of 32	ENSP00000465039.1	Q92918-1
	RYR1	ENST00000594335.6	TSL:1	n.*5732-1719G>T		intron	N/A	ENSP00000470927.2	M0R014

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152098 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459666 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726014

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33408

American (AMR) AF: 0.00 AC: 0 AN: 44516

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26082

East Asian (EAS) AF: 0.00 AC: 0 AN: 39594

South Asian (SAS) AF: 0.00 AC: 0 AN: 85906

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53136

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110974

Other (OTH) AF: 0.0000166 AC: 1 AN: 60288

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152098 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74284

African (AFR) AF: 0.00 AC: 0 AN: 41432

American (AMR) AF: 0.000131 AC: 2 AN: 15238

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68008

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000189

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.045	T
BayesDel_noAF	Benign	-0.30
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.039	T
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Uncertain	0.77	D
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.39	T
MetaSVM	Benign	-0.38	T
MutationAssessor	Benign	0.64	N
PhyloP100		3.3
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-0.10	N
REVEL	Benign	0.26
Sift	Benign	0.16	T
Sift4G	Benign	0.15	T
Polyphen		1.0	D
Vest4		0.53
MutPred		0.49		Gain of sheet (P = 0.0149)
MVP		0.66
MPC		2.5
ClinPred		0.86	D
GERP RS		5.2
Varity_R		0.083
gMVP		0.41
Mutation Taster		=83/17	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs951684177; hg19: chr19-39083925;