ISRCTN ISRCTN11217072
DOI https://doi.org/10.1186/ISRCTN11217072
ClinicalTrials.gov (NCT) Nil known
Clinical Trials Information System (CTIS) Nil known
Integrated Research Application System (IRAS) 1012766
Protocol serial number Sponsor Code LRK-4189-101
Sponsor Larkspur Biosciences
Funder Larkspur Biosciences
Submission date
24/10/2025
Registration date
24/10/2025
Last edited
24/10/2025
Recruitment status
Recruiting
Overall study status
Deferred
Condition category
Other
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

The sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.

Contact information

Dr Sharan Sidhu
Principal investigator

Quotient Sciences Limited
Mere Way
Ruddington Fields
Ruddington
Nottingham
NG11 6JS
United Kingdom

Phone +44 (0) 330 303 1000
Email recruitment@weneedyou.co.uk
Dr Clinical Trials Information
Public, Scientific

One Canal Park
Suite 210
Cambridge, Massachusetts
MA 02141
United States of America

Phone +1-617-693-1232
Email trialinfo@larkspur.bio

Study information

Primary study designInterventional
Study designFirst-in-man single ascending dose single-centre randomized study to assess the pharmacokinetics safety and tolerability in 48 healthy volunteers
Secondary study design
Study type Participant information sheet
Scientific titlePhase I Trial: Quotient Code QSC301789 [the full scientific title will be published within 30 months after the end of the trial]
Study objectivesThe sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
Ethics approval(s)

Submitted 26/08/2025, Wales REC 2 (Castlebridge 5, Cardiff, CF11 9AB, United Kingdom; +44 (0)2920 785738; wales.REC2@wales.nhs.uk), ref: 25/WA/0222

Health condition(s) or problem(s) studiedThe sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
InterventionThe sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
Intervention typeDrug
PhasePhase I
Drug / device / biological / vaccine name(s)The sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
Primary outcome measure(s)

The sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.

Key secondary outcome measure(s)

The sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.

Completion date24/04/2026

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
Lower age limit18 Years
Upper age limit55 Years
SexAll
Target sample size at registration48
Key inclusion criteriaThe sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
Key exclusion criteriaThe sponsor has confirmed that the trial meets the criteria for deferral of publication of the full details of the trial. The full details will be added to the study record within 30 months after the trial has ended.
Date of first enrolment27/10/2025
Date of final enrolment24/04/2026

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

Quotient Sciences Limited
Mere Way
Ruddington Fields
Ruddington
Nottingham
NG11 6JS
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
IPD sharing planNot expected to be made available.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes

Editorial Notes

24/10/2025: Study's existence confirmed by the Medicines and Healthcare products Regulatory Agency (MHRA), UK.