5-150056331-C-G

Variant names:

• chr5-150056331-C-G
• rs690016548
• NM_001288705.3:c.2330G>C

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Strong

The NM_001288705.3(CSF1R):​c.2330G>C​(p.Arg777Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R777Q) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CSF1R NM_001288705.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.91
• Publications: 0 publications found

Genes affected

CSF1R (HGNC:2433): (colony stimulating factor 1 receptor) The protein encoded by this gene is the receptor for colony stimulating factor 1, a cytokine which controls the production, differentiation, and function of macrophages. This receptor mediates most if not all of the biological effects of this cytokine. Ligand binding activates the receptor kinase through a process of oligomerization and transphosphorylation. The encoded protein is a tyrosine kinase transmembrane receptor and member of the CSF1/PDGF receptor family of tyrosine-protein kinases. Mutations in this gene have been associated with a predisposition to myeloid malignancy. The first intron of this gene contains a transcriptionally inactive ribosomal protein L7 processed pseudogene oriented in the opposite direction. Alternative splicing results in multiple transcript variants. Expression of a splice variant from an LTR promoter has been found in Hodgkin lymphoma (HL), HL cell lines and anaplastic large cell lymphoma. [provided by RefSeq, Mar 2017]

CSF1R Gene-Disease associations (from GenCC):

• hereditary diffuse leukoencephalopathy with axonal spheroids and pigmented glia

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Orphanet
• brain abnormalities, neurodegeneration, and dysosteosclerosis

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• leukoencephalopathy, diffuse hereditary, with spheroids 1

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• early-onset calcifying leukoencephalopathy-skeletal dysplasia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 9 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_001288705.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr5-150056331-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 162111.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.995

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001288705.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSF1R	NM_001288705.3	MANE Select	c.2330G>C	p.Arg777Pro	missense	Exon 17 of 21	NP_001275634.1
	CSF1R	NM_001349736.2		c.2330G>C	p.Arg777Pro	missense	Exon 19 of 23	NP_001336665.1
	CSF1R	NM_001375320.1		c.2330G>C	p.Arg777Pro	missense	Exon 19 of 23	NP_001362249.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSF1R	ENST00000675795.1	MANE Select	c.2330G>C	p.Arg777Pro	missense	Exon 17 of 21	ENSP00000501699.1
	CSF1R	ENST00000286301.7	TSL:1	c.2330G>C	p.Arg777Pro	missense	Exon 18 of 22	ENSP00000286301.3
	CSF1R	ENST00000504875.5	TSL:1	n.*151G>C		non_coding_transcript_exon	Exon 16 of 20	ENSP00000422212.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.48	D
BayesDel_noAF	Pathogenic	0.46
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.94	D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.77	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	0.89	D
MutationAssessor	Pathogenic	3.7	H
PhyloP100		7.9
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Pathogenic	0.90
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.99
MutPred		0.99		Gain of ubiquitination at K772 (P = 0.0418)
MVP		0.99
MPC		3.7
ClinPred		1.0	D
GERP RS		4.9
Varity_R		0.99
gMVP		0.99
Mutation Taster		=8/92	disease causing

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

Other links and lift over

dbSNP: rs690016548; hg19: chr5-149435894;