rs121908431

Variant names:

• chr8-115604099-G-A
• rs121908431
• NM_014112.5:c.1870C>T

Your query was ambiguous. Multiple possible variants found:

• chr8-115604099-G-A
• chr8-115604099-G-C

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_014112.5(TRPS1):​c.1870C>T​(p.Arg624*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. 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 Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TRPS1 NM_014112.5 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5 O:1
• Conservation: PhyloP100: -0.467
• Publications: 5 publications found

Genes affected

TRPS1 (HGNC:12340): (transcriptional repressor GATA binding 1) This gene encodes a transcription factor that represses GATA-regulated genes and binds to a dynein light chain protein. Binding of the encoded protein to the dynein light chain protein affects binding to GATA consensus sequences and suppresses its transcriptional activity. Defects in this gene are a cause of tricho-rhino-phalangeal syndrome (TRPS) types I-III. [provided by RefSeq, Jul 2008]

TRPS1 Gene-Disease associations (from GenCC):

• trichorhinophalangeal syndrome type I

  Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
• trichorhinophalangeal syndrome, type III

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• trichorhinophalangeal syndrome type I or III

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-115604099-G-A is Pathogenic according to our data. Variant chr8-115604099-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 5570.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014112.5. 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
	TRPS1	NM_014112.5	MANE Select	c.1870C>T	p.Arg624*	stop_gained	Exon 4 of 7	NP_054831.2
	TRPS1	NM_001282903.3		c.1849C>T	p.Arg617*	stop_gained	Exon 4 of 7	NP_001269832.1
	TRPS1	NM_001282902.3		c.1843C>T	p.Arg615*	stop_gained	Exon 3 of 6	NP_001269831.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRPS1	ENST00000395715.8	TSL:1 MANE Select	c.1870C>T	p.Arg624*	stop_gained	Exon 4 of 7	ENSP00000379065.3
	TRPS1	ENST00000220888.9	TSL:1	c.1831C>T	p.Arg611*	stop_gained	Exon 3 of 6	ENSP00000220888.5
	TRPS1	ENST00000519674.1	TSL:1	c.1831C>T	p.Arg611*	stop_gained	Exon 3 of 5	ENSP00000429174.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
1	-	-	Inborn genetic diseases (1)
1	-	-	not provided (1)
1	-	-	Trichorhinophalangeal dysplasia type I (2)
1	-	-	Trichorhinophalangeal dysplasia type I;C1860823:Trichorhinophalangeal syndrome, type III (1)
1	-	-	TRPS1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Benign	-0.24
CADD	Benign	21
DANN	Benign	0.89
Eigen	Benign	-0.66
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.18	N
PhyloP100		-0.47
Vest4		0.88
GERP RS		-8.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=0/200	disease causing (ClinVar)

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: rs121908431; hg19: chr8-116616326; COSMIC: COSV55246225;