Last reviewed 2026-05-19 · How we verify

14C-XEN1101

Xenon Pharmaceuticals Inc. · Phase 1 active Small molecule ✓ Verified May 2026 Quality 0/100

14C-XEN1101 is a Small molecule drug developed by Xenon Pharmaceuticals Inc.. It is currently in Phase 1 development.

14C-XEN1101 is a small molecule being studied in a single-dose mass balance recovery and metabolite profile study in healthy volunteers. The study, conducted by Xenon Pharmaceuticals Inc., aims to assess the pharmacokinetics of 14C-XEN1101.

Likelihood of approval

9.6% vs 9.6% industry baseline

If approved by FDA: likely 2033–2036

Steps remaining: Phase 2 → Phase 3 → NDA/BLA submission

Confidence: Medium

Why this estimate

Baseline phase 1 → approval rate +9.6pp
Industry-wide phase 1 drugs reach approval ~9.6% of the time (BIO/Informa 2023 industry benchmark across all therapeutic areas).

Predicted approval windows by jurisdiction (conditional on FDA approval)

Regulator	Country	Likely year	Lag vs FDA
FDA	US	2033–2036	—
EMA	EU	2034–2037	+0.7 yr
MHRA	GB	2034–2037	+0.7 yr
Health Canada	CA	2034–2038	+0.9 yr
TGA	AU	2034–2038	+1.2 yr
PMDA	JP	2034–2038	+1.5 yr
NMPA	CN	2035–2039	+2.3 yr
MFDS	KR	2034–2038	+1.4 yr
CDSCO	IN	2034–2039	+1.8 yr
ANVISA	BR	2035–2039	+2.3 yr

Hover any row for the lag rationale. Lag estimates are reduced when the drug has FDA Breakthrough or EMA PRIME designation (sponsors file globally in parallel).

Estimate based on the BIO/Informa industry phase transition rates plus per-drug modifiers for therapeutic area, sponsor type, FDA designations, mechanism, and trial design. Per-jurisdiction lags from Tufts CSDD international approval studies. Not investment, clinical or regulatory advice. Methodology: /methodology#likelihood.

At a glance

Generic name	14C-XEN1101
Sponsor	Xenon Pharmaceuticals Inc.
Modality	Small molecule
Phase	Phase 1

Approved indications

No approved indications tracked.

Common side effects

No common side effects on file.

Key clinical trials

Single-dose Mass Balance Recovery and Metabolite Profile and Identification of 14C-XEN1101 (PHASE1)

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

Source	Used for
ClinicalTrials.gov	Trial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

14C-XEN1101 CI brief — competitive landscape report
14C-XEN1101 updates RSS · CI watch RSS
Xenon Pharmaceuticals Inc. portfolio CI

Frequently asked questions about 14C-XEN1101

What is 14C-XEN1101?

14C-XEN1101 is a Small molecule drug developed by Xenon Pharmaceuticals Inc..

Who makes 14C-XEN1101?

14C-XEN1101 is developed by Xenon Pharmaceuticals Inc. (see full Xenon Pharmaceuticals Inc. pipeline at /company/xenon-pharmaceuticals-inc).

What development phase is 14C-XEN1101 in?

14C-XEN1101 is in Phase 1.

Manufacturer: Xenon Pharmaceuticals Inc. — full pipeline

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing