20-845411-G-C

Position:

• chr20-845411-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001042353.3(FAM110A):​c.607G>C​(p.Glu203Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,406 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000075 (0 hom.)
• Consequence: FAM110A NM_001042353.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.98

Genes affected

FAM110A (HGNC:16188): (family with sequence similarity 110 member A) Predicted to be located in cytoplasm; microtubule organizing center; and spindle pole. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.821

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FAM110A	NM_001042353.3	c.607G>C	p.Glu203Gln	missense_variant	2/2	ENST00000381941.8	NP_001035812.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FAM110A	ENST00000381941.8	c.607G>C	p.Glu203Gln	missense_variant	2/2	1	NM_001042353.3	ENSP00000371367.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000753 AC: 11 AN: 1461406 Hom.: 0 Cov.: 35 AF XY: 0.00000825 AC XY: 6 AN XY: 727024

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: 0.00000989

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00000824 AC: 1

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

Jan 05, 2022

The c.607G>C (p.E203Q) alteration is located in exon 2 (coding exon 1) of the FAM110A gene. This alteration results from a G to C substitution at nucleotide position 607, causing the glutamic acid (E) at amino acid position 203 to be replaced by a glutamine (Q). 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	Pathogenic	0.61
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.28	T;T;T;T;T
Eigen	Pathogenic	0.71
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	.;.;.;.;D
M_CAP	Benign	0.035	D
MetaRNN	Pathogenic	0.82	D;D;D;D;D
MetaSVM	Benign	-0.43	T
MutationAssessor	Uncertain	2.4	M;M;M;M;M
PrimateAI	Pathogenic	0.83	D
PROVEAN	Uncertain	-2.6	D;D;D;D;D
REVEL	Uncertain	0.45
Sift	Uncertain	0.0040	D;D;D;D;D
Sift4G	Uncertain	0.0090	D;D;D;D;D
Polyphen		1.0	D;D;D;D;D
Vest4		0.92
MVP		0.66
MPC		1.8
ClinPred		0.97	D
GERP RS		4.6
Varity_R		0.55
gMVP		0.69

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

LitVar

Other links and lift over

dbSNP: rs201879889; hg19: chr20-826054;