17-76736271-G-C

Variant names:

• chr17-76736271-G-C
• NM_001195427.2:c.556C>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_001195427.2(SRSF2):​c.556C>G​(p.Arg186Gly) variant causes a missense 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. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R186L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SRSF2 NM_001195427.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.306
• Publications: 0 publications found

Genes affected

SRSF2 (HGNC:10783): (serine and arginine rich splicing factor 2) The protein encoded by this gene is a member of the serine/arginine (SR)-rich family of pre-mRNA splicing factors, which constitute part of the spliceosome. Each of these factors contains an RNA recognition motif (RRM) for binding RNA and an RS domain for binding other proteins. The RS domain is rich in serine and arginine residues and facilitates interaction between different SR splicing factors. In addition to being critical for mRNA splicing, the SR proteins have also been shown to be involved in mRNA export from the nucleus and in translation. Two transcript variants encoding the same protein and one non-coding transcript variant have been found for this gene. In addition, a pseudogene of this gene has been found on chromosome 11. [provided by RefSeq, Sep 2010]

ENSG00000267168 (HGNC:):

MFSD11 (HGNC:25458): (major facilitator superfamily domain containing 11) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

MIR636 (HGNC:32892): (microRNA 636) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 2 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.7085 (below the threshold of 3.09). Trascript score misZ: 3.8222 (above the threshold of 3.09).
• BP4: Computational evidence support a benign effect (MetaRNN=0.22332108).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001195427.2. 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
	SRSF2	NM_001195427.2	MANE Select	c.556C>G	p.Arg186Gly	missense	Exon 2 of 3	NP_001182356.1	Q01130-1
	SRSF2	NM_003016.5		c.556C>G	p.Arg186Gly	missense	Exon 2 of 2	NP_003007.2
	SRSF2	NR_036608.2		n.727C>G		non_coding_transcript_exon	Exon 2 of 4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SRSF2	ENST00000359995.10	TSL:1 MANE Select	c.556C>G	p.Arg186Gly	missense	Exon 2 of 3	ENSP00000353089.5	Q01130-1
	SRSF2	ENST00000392485.2	TSL:1	c.556C>G	p.Arg186Gly	missense	Exon 2 of 2	ENSP00000376276.2	Q01130-1
	ENSG00000267168	ENST00000587459.1	TSL:5	c.239-2011G>C		intron	N/A	ENSP00000466829.1	K7EN84

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Benign	-0.081	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	19
DANN	Benign	0.67
DEOGEN2	Benign	0.19	T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.83
FATHMM_MKL	Benign	0.50	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.049	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	2.0	M
PhyloP100		0.31
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.20
Sift	Uncertain	0.019	D
Sift4G	Benign	0.18	T
Polyphen		0.80	P
Vest4		0.31
MutPred		0.34		Loss of methylation at R186 (P = 0.026)
MVP		0.15
MPC		1.8
ClinPred		0.79	D
GERP RS		-7.3
PromoterAI		-0.0018	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.16
gMVP		0.63

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

Other links and lift over

hg19: chr17-74732353;