NM_003611.3:c.2631G>A

Variant names:

• chrX-13767158-G-A
• rs797045848
• NM_003611.3:c.2631G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6 BP7

The NM_003611.3(OFD1):​c.2631G>A​(p.Lys877Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 21)
• Consequence: OFD1 NM_003611.3 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: -0.331
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• ciliopathy

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• Joubert syndrome 10

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• orofaciodigital syndrome I

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa 23

  Inheritance: XL Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• orofaciodigital syndrome type 6

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Simpson-Golabi-Behmel syndrome type 2

  Inheritance: XL Classification: LIMITED Submitted by: G2P

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.7).
• BP6: Variant X-13767158-G-A is Benign according to our data. Variant chrX-13767158-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 211789.
• BP7: Synonymous conserved (PhyloP=-0.331 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003611.3. 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
	OFD1	NM_003611.3	MANE Select	c.2631G>A	p.Lys877Lys	synonymous	Exon 20 of 23	NP_003602.1
	OFD1	NM_001440947.1		c.2520G>A	p.Lys840Lys	synonymous	Exon 19 of 22	NP_001427876.1
	OFD1	NM_001330209.2		c.2511G>A	p.Lys837Lys	synonymous	Exon 19 of 22	NP_001317138.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OFD1	ENST00000340096.11	TSL:1 MANE Select	c.2631G>A	p.Lys877Lys	synonymous	Exon 20 of 23	ENSP00000344314.6
	OFD1	ENST00000380550.6	TSL:1	c.2511G>A	p.Lys837Lys	synonymous	Exon 19 of 22	ENSP00000369923.3
	OFD1	ENST00000922714.1		c.2634G>A	p.Lys878Lys	synonymous	Exon 20 of 23	ENSP00000592773.1

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 21

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)
-	-	1	Primary ciliary dyskinesia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.70
CADD	Benign	0.59
DANN	Benign	0.87
PhyloP100		-0.33
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.2

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs797045848; hg19: chrX-13785277;