chr2-19353705-G-A

Position:

• chr2-19353705-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_145260.3(OSR1):​c.101C>T​(p.Pro34Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,794 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: OSR1 NM_145260.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.00

Genes affected

OSR1 (HGNC:8111): (odd-skipped related transcription factor 1) Enables sequence-specific double-stranded DNA binding activity. Involved in negative regulation of ion transmembrane transporter activity; positive regulation of gastrulation; and pronephros development. Located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

OSR1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OSR1	NM_145260.3	c.101C>T	p.Pro34Leu	missense_variant	2/3	ENST00000272223.3	NP_660303.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OSR1	ENST00000272223.3	c.101C>T	p.Pro34Leu	missense_variant	2/3	1	NM_145260.3	ENSP00000272223.2
OSR1	ENST00000487581.1	n.3208C>T		non_coding_transcript_exon_variant	1/2	1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461794 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727194

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 14, 2023

The c.101C>T (p.P34L) alteration is located in exon 2 (coding exon 1) of the OSR1 gene. This alteration results from a C to T substitution at nucleotide position 101, causing the proline (P) at amino acid position 34 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Uncertain	0.077	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T
Eigen	Uncertain	0.52
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.034	D
MetaRNN	Uncertain	0.65	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.97	L
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-0.79	N
REVEL	Benign	0.23
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.032	D
Polyphen		0.95	P
Vest4		0.76
MutPred		0.46		Loss of disorder (P = 0.0416);
MVP		0.66
ClinPred		0.74	D
GERP RS		5.8
Varity_R		0.45
gMVP		0.53

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-19553466;