rs192720874

Positions:

• chrX-13758462-T-A

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BS1 BS2

The NM_003611.3(OFD1):​c.1654+14T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000266 in 998,817 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 66 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0013 (0 hom., 44 hem., cov: 22)
  • Exomes 𝑓: 0.00014 (0 hom. 22 hem.)
• Consequence: OFD1 NM_003611.3 intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: 1.59

Genes affected

OFD1 (HGNC:2567): (OFD1 centriole and centriolar satellite protein) This gene is located on the X chromosome and encodes a centrosomal protein. A knockout mouse model has been used to study the effect of mutations in this gene. The mouse gene is also located on the X chromosome, however, unlike the human gene it is not subject to X inactivation. Mutations in this gene are associated with oral-facial-digital syndrome type I and Simpson-Golabi-Behmel syndrome type 2. Many pseudogenes have been identified; a single pseudogene is found on chromosome 5 while as many as fifteen have been found on the Y chromosome. [provided by RefSeq, Aug 2016]

OFD1 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.4).
• BP6: Variant X-13758462-T-A is Benign according to our data. Variant chrX-13758462-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 259096.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0013 (146/111920) while in subpopulation AFR AF= 0.00445 (137/30813). AF 95% confidence interval is 0.00384. There are 0 homozygotes in gnomad4. There are 44 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.
• BS2: High Hemizygotes in GnomAd4 at 44 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OFD1	NM_003611.3	c.1654+14T>A		intron_variant		ENST00000340096.11	NP_003602.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OFD1	ENST00000340096.11	c.1654+14T>A		intron_variant		1	NM_003611.3	ENSP00000344314.6

Frequencies

GnomAD3 genomes AF: 0.00121 AC: 135 AN: 111869 Hom.: 0 Cov.: 22 AF XY: 0.00103 AC XY: 35 AN XY: 34025

Gnomad AFR AF: 0.00410

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000380

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: 0.00

Gnomad OTH AF: 0.00332

GnomAD3 exomes AF: 0.000374 AC: 66 AN: 176534 Hom.: 0 AF XY: 0.000209 AC XY: 13 AN XY: 62106

Gnomad AFR exome AF: 0.00440

Gnomad AMR exome AF: 0.000338

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000572

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000229

GnomAD4 exome AF: 0.000135 AC: 120 AN: 886897 Hom.: 0 Cov.: 16 AF XY: 0.0000947 AC XY: 22 AN XY: 232367

Gnomad4 AFR exome AF: 0.00404

Gnomad4 AMR exome AF: 0.000377

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000205

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000153

Gnomad4 OTH exome AF: 0.000384

GnomAD4 genome AF: 0.00130 AC: 146 AN: 111920 Hom.: 0 Cov.: 22 AF XY: 0.00129 AC XY: 44 AN XY: 34086

Gnomad4 AFR AF: 0.00445

Gnomad4 AMR AF: 0.000380

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00328

Alfa AF: 0.00114 Hom.: 3

Bravo AF: 0.00143

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 01, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Familial aplasia of the vermis;C1510460:Orofaciodigital syndrome I Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 30, 2023

- -

Retinitis pigmentosa 23;C1510460:Orofaciodigital syndrome I;C1846175:Simpson-Golabi-Behmel syndrome type 2;C2749019:Joubert syndrome 10 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Aug 12, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.40
CADD	Benign	3.1
DANN	Benign	0.81

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: rs192720874; hg19: chrX-13776581;