chrX-1294321-G-C

Variant names:

• chrX-1294321-G-C
• rs189869234
• NM_172245.4:c.647-7G>C

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_172245.4(CSF2RA):​c.647-7G>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,906 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom. 3 hem.)
• Consequence: CSF2RA NM_172245.4 splice_region, intron
• Scores: Splicing: ADA: 0.00001308
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.88
• Publications: 0 publications found

Genes affected

CSF2RA (HGNC:2435): (colony stimulating factor 2 receptor subunit alpha) The protein encoded by this gene is the alpha subunit of the heterodimeric receptor for colony stimulating factor 2, a cytokine which controls the production, differentiation, and function of granulocytes and macrophages. The encoded protein is a member of the cytokine family of receptors. This gene is found in the pseudoautosomal region (PAR) of the X and Y chromosomes. Multiple transcript variants encoding different isoforms have been found for this gene, with some of the isoforms being membrane-bound and others being soluble. [provided by RefSeq, Jul 2008]

CSF2RA Gene-Disease associations (from GenCC):

• surfactant metabolism dysfunction, pulmonary, 4

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• hereditary pulmonary alveolar proteinosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BS2: High Hemizygotes in GnomAdExome4 at 3 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_172245.4. 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
	CSF2RA	NM_172245.4	MANE Select	c.647-7G>C		splice_region intron	N/A	NP_758448.1	P15509-1
	CSF2RA	NM_001161530.2		c.647-7G>C		splice_region intron	N/A	NP_001155002.1	P15509-7
	CSF2RA	NM_001379153.1		c.647-7G>C		splice_region intron	N/A	NP_001366082.1	P15509-7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSF2RA	ENST00000381529.9	TSL:1 MANE Select	c.647-7G>C		splice_region intron	N/A	ENSP00000370940.3	P15509-1
	CSF2RA	ENST00000381509.8	TSL:1	c.647-7G>C		splice_region intron	N/A	ENSP00000370920.3	P15509-2
	CSF2RA	ENST00000381524.8	TSL:1	c.647-7G>C		splice_region intron	N/A	ENSP00000370935.3	P15509-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1460906 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 726766

African (AFR) AF: 0.00 AC: 0 AN: 33456

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86198

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5152

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111836

Other (OTH) AF: 0.00 AC: 0 AN: 60304

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.051
DANN	Benign	0.35
PhyloP100		-2.9

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000013
dbscSNV1_RF	Benign	0.0040
SpliceAI score (max)		0.31		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.31		Position offset: 26

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs189869234; hg19: chrX-1413214;