NM_015161.3:c.26C>T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015161.3(ARL6IP1):c.26C>T(p.Thr9Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,766 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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. T9S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ARL6IP1
NM_015161.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.55

Publications

0 publications found

Variant links:

Genes affected

ARL6IP1 (HGNC:697): (ADP ribosylation factor like GTPase 6 interacting protein 1) This gene belongs to the ARL6ip family and encodes a transmembrane protein that is predominantly localized to intracytoplasmic membranes. It is highly expressed in early myeloid progenitor cells and thought to be involved in protein transport, membrane trafficking, or cell signaling during hematopoietic maturation. Mutations in this gene are associated with spastic paraplegia 61 (SPG61). Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2015]

ARL6IP1 Gene-Disease associations (from GenCC):

hereditary spastic paraplegia
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hereditary spastic paraplegia 61
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

ARL6IP1 links:

ENSG00000260342 (HGNC:):

ENSG00000260342 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.110203475).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015161.3. 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
	ARL6IP1	NM_015161.3	MANE Select	c.26C>T	p.Thr9Ile	missense	Exon 1 of 6	NP_055976.1
	ARL6IP1	NM_001313858.1		c.-294C>T		upstream_gene	N/A	NP_001300787.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ARL6IP1	ENST00000304414.12	TSL:1 MANE Select	c.26C>T	p.Thr9Ile	missense	Exon 1 of 6	ENSP00000306788.7
ENSG00000260342	ENST00000567078.2	TSL:3	c.26C>T	p.Thr9Ile	missense	Exon 1 of 7	ENSP00000454746.2
ARL6IP1	ENST00000563861.5	TSL:1	n.26C>T		non_coding_transcript_exon	Exon 1 of 5	ENSP00000456596.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000406

AC:

AN:

246082

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000169

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460766

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726666

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44652

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26038

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86048

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53084

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111754

Other (OTH)

AF:

0.0000166

AC:

AN:

60284

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Aug 05, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.26C>T (p.T9I) alteration is located in exon 1 (coding exon 1) of the ARL6IP1 gene. This alteration results from a C to T substitution at nucleotide position 26, causing the threonine (T) at amino acid position 9 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.42

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.058

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.27

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.85

M_CAP

Benign

0.0048

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

PhyloP100

1.6

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.1

REVEL

Benign

0.022

Sift

Uncertain

0.015

Sift4G

Benign

0.18

Polyphen

0.11

Vest4

0.28

MutPred

0.27

Loss of disorder (P = 0.0137)

MVP

0.085

MPC

0.73

ClinPred

0.55

GERP RS

2.5

PromoterAI

-0.070

Neutral

(source)

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

2.8

Varity_R

0.076

gMVP

0.38

Mutation Taster

=93/7

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over