chr7-98881229-G-C

Position:

• chr7-98881229-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001375524.1(TRRAP):​c.79G>C​(p.Ala27Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A27A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: TRRAP NM_001375524.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.80

Genes affected

TRRAP (HGNC:12347): (transformation/transcription domain associated protein) This gene encodes a large multidomain protein of the phosphoinositide 3-kinase-related kinases (PIKK) family. The encoded protein is a common component of many histone acetyltransferase (HAT) complexes and plays a role in transcription and DNA repair by recruiting HAT complexes to chromatin. Deregulation of this gene may play a role in several types of cancer including glioblastoma multiforme. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TRRAP. . Gene score misZ 8.173 (greater than the threshold 3.09). Trascript score misZ 10.503 (greater than threshold 3.09). GenCC has associacion of gene with autosomal dominant nonsyndromic hearing loss, developmental delay with or without dysmorphic facies and autism, hearing loss, autosomal dominant 75, complex neurodevelopmental disorder with or without congenital anomalies.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRRAP	NM_001375524.1	c.79G>C	p.Ala27Pro	missense_variant	2/73	ENST00000456197.2
TRRAP	NM_001244580.2	c.79G>C	p.Ala27Pro	missense_variant	2/72
TRRAP	NM_003496.4	c.79G>C	p.Ala27Pro	missense_variant	2/71

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRRAP	ENST00000456197.2	c.79G>C	p.Ala27Pro	missense_variant	2/73	1	NM_001375524.1	P2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 31, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 27535533) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.070
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Benign	0.19	T;T;.;.;.
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D;D;D;D;.
M_CAP	Benign	0.0035	T
MetaRNN	Uncertain	0.51	D;D;D;D;D
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	.;N;N;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-2.3	N;N;N;.;N
REVEL	Uncertain	0.37
Sift	Benign	0.062	T;T;T;.;T
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		0.95, 0.97	.;P;D;.;.
Vest4		0.84, 0.83, 0.82, 0.80
MutPred		0.53		Loss of stability (P = 0.0456);Loss of stability (P = 0.0456);Loss of stability (P = 0.0456);Loss of stability (P = 0.0456);Loss of stability (P = 0.0456);
MVP		0.41
MPC		1.9
ClinPred		0.74	D
GERP RS		6.1
Varity_R		0.66
gMVP		0.92

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-98478852;