TRIOBP p.Pro423Pro

Variant names:

• chr22-37759497-C-C
• NM_001039141.3:c.

Your query was ambiguous. Multiple possible variants found:

• chr22-37759498--
• chr22-37759500-G-T
• chr22-37759500-G-C
• chr22-37759500-G-A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_138632.2(TRIOBP):​c. variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TRIOBP NM_138632.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.281
• Publications: 0 publications found

Genes affected

TRIOBP (HGNC:17009): (TRIO and F-actin binding protein) This gene encodes a protein with an N-terminal pleckstrin homology domain and a C-terminal coiled-coil region. The protein interacts with trio, which is involved with neural tissue development and controlling actin cytoskeleton organization, cell motility and cell growth. The protein also associates with F-actin and stabilizes F-actin structures. Mutations in this gene have been associated with a form of autosomal recessive nonsyndromic deafness. Multiple alternatively spliced transcript variants that would encode different isoforms have been found for this gene, however some transcripts may be subject to nonsense-mediated decay (NMD). [provided by RefSeq, Nov 2008]

TRIOBP Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 28

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
• hearing loss, autosomal recessive

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_138632.2. 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
	TRIOBP	NM_001039141.3	MANE Select	c.		intron	N/A	NP_001034230.1	Q9H2D6-1
	TRIOBP	NM_007032.5		c.		intron	N/A	NP_008963.3	Q9H2D6-7
	TRIOBP	NM_138632.2		c.		intron	N/A	NP_619538.2	Q9H2D6-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRIOBP	ENST00000644935.1	MANE Select	c.		intron	N/A	ENSP00000496394.1	Q9H2D6-1
	TRIOBP	ENST00000403663.6	TSL:1	c.		intron	N/A	ENSP00000386026.2	Q9H2D6-7
	TRIOBP	ENST00000344404.10	TSL:2	n.		intron	N/A	ENSP00000340312.6	H7BXW4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.28

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr22-38155504;