NM_015662.3(IFT172):c.786-2A>T AND multiple conditions

Germline classification:: Likely pathogenic (1 submission)
Last evaluated:: Jan 31, 2024
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV002571459.3

Allele description [Variation Report for NM_015662.3(IFT172):c.786-2A>T]

NM_015662.3(IFT172):c.786-2A>T

Gene:

IFT172:intraflagellar transport 172 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2p23.3

Genomic location:

Preferred name:

NM_015662.3(IFT172):c.786-2A>T

HGVS:

NC_000002.12:g.27480151T>A
NG_034068.1:g.14661A>T
NM_001410739.1:c.786-2A>T
NM_015662.3:c.786-2A>TMANE SELECT
NC_000002.11:g.27703018T>A
NM_015662.2:c.786-2A>T

Molecular consequence:

NM_001410739.1:c.786-2A>T - splice acceptor variant - [Sequence Ontology: SO:0001574]
NM_015662.3:c.786-2A>T - splice acceptor variant - [Sequence Ontology: SO:0001574]

Condition(s)

Name:: Short-rib thoracic dysplasia 10 with or without polydactyly (SRTD10)
Identifiers:: MONDO: MONDO:0014284; MedGen: C3810175; Orphanet: 474; OMIM: 615630

Name:: Retinitis pigmentosa 71 (RP71)
Identifiers:: MONDO: MONDO:0014618; MedGen: C4225342; Orphanet: 791; OMIM: 616394

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV003258055	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely pathogenic (Jan 31, 2024)	germline	clinical testing	PubMed (3) [See all records that cite these PMIDs] 16199547, 24140113, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV003258055

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Likely pathogenic
(Jan 31, 2024)

germline

clinical testing

PubMed (3)
[See all records that cite these PMIDs]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Splicing in action: assessing disease causing sequence changes.

Baralle D, Baralle M.

J Med Genet. 2005 Oct;42(10):737-48. Review.

PubMed [citation]

PMID:: 16199547
PMCID:: PMC1735933

Defects in the IFT-B component IFT172 cause Jeune and Mainzer-Saldino syndromes in humans.

Halbritter J, Bizet AA, Schmidts M, Porath JD, Braun DA, Gee HY, McInerney-Leo AM, Krug P, Filhol E, Davis EE, Airik R, Czarnecki PG, Lehman AM, Trnka P, Nitschké P, Bole-Feysot C, Schueler M, Knebelmann B, Burtey S, Szabó AJ, Tory K, Leo PJ, et al.

Am J Hum Genet. 2013 Nov 7;93(5):915-25. doi: 10.1016/j.ajhg.2013.09.012. Epub 2013 Oct 17.

PubMed [citation]

PMID:: 24140113
PMCID:: PMC3824130

See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV003258055.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (3)

Description

This sequence change affects an acceptor splice site in intron 8 of the IFT172 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in IFT172 are known to be pathogenic (PMID: 24140113). This variant is present in population databases (rs757253624, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with IFT172-related conditions. ClinVar contains an entry for this variant (Variation ID: 1805202). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 13, 2024

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