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Target Snapshot

CHEMBL1903 Target Snapshot

Sodium- and chloride-dependent GABA transporter 1 · SINGLE PROTEIN · Homo sapiens

217Compounds
56Assays
4Approved Drugs
220.0Activities
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Broader Open DB context

Frame the target before identity details

Structured disease, protein, and project context should read before the lower-level identity rail.

As of 2026-09-14

Sodium- and chloride-dependent GABA transporter 1 shows approved-linked disease relevance led by Seizure. 2 more disease programs remain visible in the same review block. 1 linked drug keeps the current disease frame grounded. Protein identity stays anchored to UniProt P30531. Start with Seizure, then reuse UniProt P30531 as the stable protein anchor across project notes and exports.

Review focus
Review-ready target frame

Start with Seizure, then reuse UniProt P30531 as the stable protein anchor across project notes and exports.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-14 1 linked drug
Open source guide
Disease program
Seizure

Sodium- and chloride-dependent GABA transporter 1 shows approved-linked disease relevance led by Seizure. 2 more disease programs remain visible in the same review block. 1 linked drug remains visible in the same block.

Start review with Seizure because it currently carries approved-linked support. Linked drugs include TIAGABINE HYDROCHLORIDE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Disease source · ChEMBL drug mechanism + indication proxy
Approved-linked Open Targets-ready proxy 1 linked drug
Open disease block
Identity Layer

Cross-source identity

Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.

This review treats Sodium- and chloride-dependent GABA transporter 1 as ChEMBL target CHEMBL1903, mapped to UniProt P30531. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Sodium- and chloride-dependent GABA transporter 1
SINGLE PROTEIN · Homo sapiens
As of 2026-09-14
ChEMBL target ID
CHEMBL1903
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
P30531
Sodium- and chloride-dependent GABA transporter 1
UniProt accession via ChEMBL component mapping As of 2026-09-14
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-14
www.ebi.ac.uk

Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.

Source Guidance

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Sodium- and chloride-dependent GABA transporter 1 is the right protein anchor across sources, using UniProt P30531 as the stable mapping.

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Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

Use this block first when you need to confirm why Seizure is currently framed as approved-linked support. It currently carries 1 linked drug in the same disease frame.

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Evidence Card
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Overview

Basic Information

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UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein LabelSodium- and chloride-dependent GABA transporter 1
UniProt AccessionP30531
Component TypeProtein
Sequence Length599 aa

Sodium- and chloride-dependent GABA transporter 1

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Sodium- and chloride-dependent GABA transporter 1, mapped to UniProt P30531. Sequence length is 599 aa.

Mapped IDP30531
Review nameSodium- and chloride-dependent GABA transporter 1
OrganismHomo sapiens
Disease Relevance

Disease Relevance & Evidence Level

Open Targets-ready disease context using the current target-indication evidence contract.

Approved-linked Open Targets-ready proxy

Sodium- and chloride-dependent GABA transporter 1 shows approved-linked disease relevance led by Seizure. 2 more disease programs remain visible in the same review block.

Approved-linked Approved
Seizure
1 linked drug · 1 direct · 1 efficacy
Linked drugTIAGABINE HYDROCHLORIDE
Late clinical Phase III
anxiety
1 linked drug · 1 direct · 1 efficacy
Linked drugTIAGABINE HYDROCHLORIDE
Late clinical Phase III
generalized anxiety disorder
1 linked drug · 1 direct · 1 efficacy
Linked drugTIAGABINE HYDROCHLORIDE
Source · ChEMBL drug mechanism + indication proxy
Review Cue

How to read disease relevance

Start review with Seizure because it currently carries approved-linked support. Linked drugs include TIAGABINE HYDROCHLORIDE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Lead diseaseSeizure
Strongest levelApproved-linked
Block modeOpen Targets-ready proxy
Clinical Profile

Clinical Phase Distribution

4
Approved
1
Phase I
Assay Mix

Activity Type Distribution

IC50151.0
KI63.0
KD6.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL277498 8.0 IC50 10.1 Preclinical
CHEMBL1641613 7.83 Ki 14.79 Preclinical
CHEMBL1027 7.77 Ki 16.98 Approved
CHEMBL1642396 7.74 Ki 18.2 Preclinical
CHEMBL1642400 7.72 Ki 19.05 Preclinical
CHEMBL1642378 7.69 Ki 20.42 Preclinical
CHEMBL1642397 7.66 Ki 21.88 Preclinical
CHEMBL1642376 7.54 Ki 28.84 Preclinical
CHEMBL1642379 7.53 Ki 29.51 Preclinical
CHEMBL1642384 7.47 Ki 33.88 Preclinical
Distribution

pChEMBL Value Distribution

18
5.0
14
5.5
18
6.0
18
6.5
26
7.0
8
7.5
1
8.0
0
8.5
0
9.0
0
9.5
pChEMBL
Approved Drugs

Approved Drugs

TIAGABINE
CHEMBL1027
Approved 1997
TIAGABINE HYDROCHLORIDE
CHEMBL1695
Approved 1997
Assay Landscape

Assay Landscape

56
Total Assays
121
Tested Compounds
2
Assay Types
Binding — 55 assays, 121 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 43 73 6.4
single protein format 12 48 5.5
Functional — 1 assays, 5 compounds
BAO Format Assays Compounds Avg pChEMBL
assay format 1 5 6.9

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine