5-66596756-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001164664.2(MAST4):c.101C>T(p.Pro34Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000016 in 1,248,986 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 (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000016 (0 hom.)
• Consequence: MAST4 NM_001164664.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.872

Genes affected

MAST4 (HGNC:19037): (microtubule associated serine/threonine kinase family member 4) This gene encodes a member of the microtubule-associated serine/threonine protein kinases. The proteins in this family contain a domain that gives the kinase the ability to determine its own scaffold to control the effects of their kinase activities. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20550448).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAST4	NM_001164664.2	c.101C>T	p.Pro34Leu	missense_variant	1/29	ENST00000403625.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MAST4	ENST00000403625.7	c.101C>T	p.Pro34Leu	missense_variant	1/29	5	NM_001164664.2	A2
MAST4	ENST00000406374.5	c.101C>T	p.Pro34Leu	missense_variant	1/6	1
MAST4	ENST00000406039.5	c.101C>T	p.Pro34Leu	missense_variant	1/5	1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000160 AC: 2 AN: 1248986 Hom.: 0 Cov.: 33 AF XY: 0.00000328 AC XY: 2 AN XY: 608892

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000195

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.92e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 14, 2021

The c.101C>T (p.P34L) alteration is located in exon 1 (coding exon 1) of the MAST4 gene. This alteration results from a C to T substitution at nucleotide position 101, causing the proline (P) at amino acid position 34 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
Cadd	Benign	17
Dann	Uncertain	1.0
DEOGEN2	Benign	0.0091	T;.;T
Eigen	Benign	-0.94
Eigen_PC	Benign	-0.94
FATHMM_MKL	Benign	0.039	N
LIST_S2	Benign	0.58	T;T;T
M_CAP	Pathogenic	0.97	D
MetaRNN	Benign	0.21	T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.0	N;N;.
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Pathogenic	0.83	D
PROVEAN	Benign	-0.63	N;N;N
REVEL	Benign	0.043
Sift	Uncertain	0.0080	D;D;D
Sift4G	Uncertain	0.021	D;D;D
Polyphen		0.0070, 0.012	.;B;B
Vest4		0.13
MutPred		0.15		Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);Gain of helix (P = 0.0199);
MVP		0.58
MPC		0.61
ClinPred		0.25	T
GERP RS		1.3
Varity_R		0.034
gMVP		0.075

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1274035672; hg19: chr5-65892584;