7-98881202-A-C

Position:

• chr7-98881202-A-C

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2 BP4 BS2

The NM_001375524.1(TRRAP):​c.52A>C​(p.Met18Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000497 in 1,610,728 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 nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: TRRAP NM_001375524.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.39

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 Likely_benign. Variant got -4 ACMG points.

• 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.35103667).
• BS2: High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRRAP	NM_001375524.1	c.52A>C	p.Met18Leu	missense_variant	2/73	ENST00000456197.2
TRRAP	NM_001244580.2	c.52A>C	p.Met18Leu	missense_variant	2/72
TRRAP	NM_003496.4	c.52A>C	p.Met18Leu	missense_variant	2/71

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRRAP	ENST00000456197.2	c.52A>C	p.Met18Leu	missense_variant	2/73	1	NM_001375524.1	P2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000480 AC: 7 AN: 1458518 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 725532

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74374

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

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

May 29, 2021

Not observed at significant frequency in large population cohorts (Lek et al., 2016); 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	Uncertain	0.39
BayesDel_addAF	Uncertain	0.063	T
BayesDel_noAF	Benign	-0.15
CADD	Uncertain	23
DANN	Benign	0.89
DEOGEN2	Benign	0.095	T;T;.;.;.
Eigen	Benign	0.024
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D;D;D;D;.
M_CAP	Benign	0.0014	T
MetaRNN	Benign	0.35	T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	.;M;M;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-1.9	N;N;N;.;N
REVEL	Benign	0.13
Sift	Benign	0.049	D;T;T;.;T
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		0.0050, 0.0090	.;B;B;.;.
Vest4		0.45, 0.45, 0.54, 0.45
MutPred		0.31		Loss of methylation at K20 (P = 0.0815);Loss of methylation at K20 (P = 0.0815);Loss of methylation at K20 (P = 0.0815);Loss of methylation at K20 (P = 0.0815);Loss of methylation at K20 (P = 0.0815);
MVP		0.50
MPC		0.85
ClinPred		0.66	D
GERP RS		6.1
Varity_R		0.45
gMVP		0.74

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

LitVar

Other links and lift over

dbSNP: rs1411933620; hg19: chr7-98478825;