rs193921095

chr14-75985807-G-Achr14-75985807-G-T

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 2P and 17B. PM2 BP4_Strong BP6_Very_Strong BP7 BS1

The NM_001102564.3(IFT43):c.21G>A(p.Leu7=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000273 in 1,614,210 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00017 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00028 (1 hom.)
• Consequence: IFT43 NM_001102564.3 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.298

Genes affected

IFT43 (HGNC:29669): (intraflagellar transport 43) This gene encodes a subunit of the intraflagellar transport complex A (IFT-A). IFT-A is a multiprotein complex that plays an important role in cilia assembly and maintenance by mediating retrograde ciliary transport. Mutations in this gene are a cause of cranioectodermal dysplasia-3 (CED3), also known as Sensenbrenner syndrome. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Benign. Variant got -15 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 14-75985807-G-A is Benign according to our data. Variant chr14-75985807-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 314466.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.298 with no splicing effect.
• BS1: Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000283 (414/1461872) while in subpopulation MID AF= 0.00364 (21/5768). AF 95% confidence interval is 0.00244. There are 1 homozygotes in gnomad4_exome. There are 203 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IFT43	NM_001102564.3	c.21G>A	p.Leu7=	synonymous_variant	1/9	ENST00000314067.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IFT43	ENST00000314067.11	c.21G>A	p.Leu7=	synonymous_variant	1/9	2	NM_001102564.3	P1

Frequencies

GnomAD3 genomes AF: 0.000171 AC: 26 AN: 152220 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000458

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000191

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000318 AC: 80 AN: 251342 Hom.: 0 AF XY: 0.000353 AC XY: 48 AN XY: 135876

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000520

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000457

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000387

Gnomad OTH exome AF: 0.000651

GnomAD4 exome AF: 0.000283 AC: 414 AN: 1461872 Hom.: 1 Cov.: 31 AF XY: 0.000279 AC XY: 203 AN XY: 727234

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.000626

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000406

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000262

Gnomad4 OTH exome AF: 0.000546

GnomAD4 genome AF: 0.000171 AC: 26 AN: 152338 Hom.: 0 Cov.: 32 AF XY: 0.000148 AC XY: 11 AN XY: 74492

Gnomad4 AFR AF: 0.0000481

Gnomad4 AMR AF: 0.000457

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000191

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000461 Hom.: 1

Bravo AF: 0.000230

EpiCase AF: 0.000709

EpiControl AF: 0.000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

IFT43-related disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 06, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Dec 06, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
Cadd	Benign	4.1
Dann	Benign	0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs193921095; hg19: chr14-76452150;