NCT03769285

Brief Summary

A common long-term side effect of anti-rejection (immunosuppressant) medications is skin cancer. This pilot clinical trial evaluates the feasibility of conducting a larger pivotal trial to examine the efficacy and safety of nicotinamide for prevention of keratinocyte carcinoma in solid organ transplant recipients. This pilot trial will transition into the pivotal trial if all feasibility targets are met.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
120

participants targeted

Target at P50-P75 for phase_2

Timeline
Completed

Started Dec 2018

Longer than P75 for phase_2

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 3, 2018

Completed
1 day until next milestone

First Submitted

Initial submission to the registry

December 4, 2018

Completed
3 days until next milestone

First Posted

Study publicly available on registry

December 7, 2018

Completed
5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2023

Completed
Last Updated

April 6, 2023

Status Verified

March 1, 2023

Enrollment Period

5 years

First QC Date

December 4, 2018

Last Update Submit

April 4, 2023

Conditions

Outcome Measures

Primary Outcomes (9)

  • Feasibility (pertaining to patient recruitment)

    Proportion of patients who consent to data linkage to provincial administrative databases

    1 year

  • Feasibility (pertaining to appropriateness of eligibility criteria)

    Reasons for exclusion of screened patients

    1 year

  • Feasibility (pertaining to adherence to intervention)

    Proportion of capsules returned, reasons for non-adherence

    1 year

  • Feasibility (pertaining to adherence to follow-up assessments)

    Proportion of missed assessments and incomplete questionnaire data variables, proportion of patients who withdraw from the trial, patient perception of trial participation

    1 year

  • Feasibility (pertaining to data linkage)

    Proportion of patients who consent to data linkage to provincial administrative databases

    1 year

  • Preliminary pooled keratinocyte carcinoma event rate

    Pooled keratinocyte carcinoma event rate to be used for sample size re-estimation in the pivotal trial.

    1 year

  • Drug interactions

    Proportion of patients with a clinically relevant increase in cyclosporine or tacrolimus blood concentration at 1 week. An increased level will be classified as clinically relevant if the transplant physician reduces the immunosuppressant dose in response to the increased drug level.

    1 week

  • Drug interactions

    Proportion of patients with a clinically relevant increase in cyclosporine or tacrolimus blood concentration at 2 weeks. This measurement will be dropped if all cases of clinically relevant drug interactions manifest at 1 week in the first 20 enrolled participants.

    2 weeks

  • Serious adverse events

    Descriptive tabulation (preliminary safety)

    1 year

Secondary Outcomes (9)

  • Feasibility of recruiting for neurocognitive substudy

    1 year

  • Baseline prevalence of cognitive impairment (substudy)

    1 year

  • Pooled standard deviation of MoCA test scores (substudy)

    1 year

  • Pooled standard deviation of Hopkins Verbal Learning Test - Revised scores (substudy)

    1 year

  • Pooled standard deviation of Trail Making A and B test scores (substudy)

    1 year

  • +4 more secondary outcomes

Study Arms (2)

Nicotinamide

EXPERIMENTAL
Drug: Nicotinamide

Placebo

PLACEBO COMPARATOR
Drug: Placebo oral capsule

Interventions

Oral nicotinamide (500 mg) twice daily for at least 52 weeks

Also known as: niacinamide
Nicotinamide

Matching placebo taken twice daily for at least 52 weeks

Placebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18 years old
  • Kidney, liver, heart, or lung transplant at least two years ago
  • History of at least one prior histologically-confirmed keratinocyte carcinoma or squamous cell carcinoma in situ
  • Currently immunosuppressed with a calcineurin inhibitor-based regimen (cyclosporine or tacrolimus)
  • Able to attend follow-up visits
  • Able to speak and understand English (only for cognitive substudy)

You may not qualify if:

  • Use of mTOR inhibitor (sirolimus, everolimus) within the past 12 weeks
  • Biopsy-confirmed acute rejection episode within the past 12 weeks
  • Active liver disease (elevated AST or ALT \>3 times normal)
  • Severe renal failure (estimated glomerular filtration rate \<20 mL/min/1.73 m2)
  • Current carbamazepine or primidone use
  • Pregnancy and lactation
  • Gorlin syndrome or other genetic skin cancer syndrome
  • Solid organ or hematologic malignancy, invasive Stage II melanoma, Merkel cell carcinoma, or metastatic skin cancer within the past five years, or invasive Stage I melanoma within the past two years
  • Untreated localized skin cancer (invasive squamous cell carcinoma, basal cell carcinoma, or keratoacanthoma) at baseline (the patient can enrol after skin cancer treatment)
  • Use of nicotinamide or niacin (250 mg or more daily) within the past 12 weeks
  • Use of field therapy for actinic keratoses within the past 12 weeks
  • Initiation of systemic chemoprevention within the past 12 weeks

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Toronto General Hospital, University Health Network

Toronto, Ontario, M5G 2N2, Canada

Location

MeSH Terms

Conditions

Carcinoma, Squamous CellCarcinoma, Basal Cell

Interventions

Niacinamide

Condition Hierarchy (Ancestors)

CarcinomaNeoplasms, Glandular and EpithelialNeoplasms by Histologic TypeNeoplasmsNeoplasms, Squamous CellNeoplasms, Basal Cell

Intervention Hierarchy (Ancestors)

Nicotinic AcidsAcids, HeterocyclicHeterocyclic CompoundsPyridinesHeterocyclic Compounds, 1-Ring

Study Officials

  • An-Wen Chan, MD DPhil

    Women's College Hospital

    PRINCIPAL INVESTIGATOR
  • Joseph Kim, MD PhD

    University Health Network, Toronto

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 4, 2018

First Posted

December 7, 2018

Study Start

December 3, 2018

Primary Completion

December 1, 2023

Study Completion

December 1, 2023

Last Updated

April 6, 2023

Record last verified: 2023-03

Data Sharing

IPD Sharing
Will share

If feasibility thresholds are met, this pilot trial will proceed to a larger pivotal trial. The study protocol for the pivotal trial will be published prior to completion of data collection. Beyond 2 years after completion of the pivotal trial, the cleaned, anonymized, participant-level dataset and statistical code will made available for sharing with external researchers upon approval of a study proposal describing the intended data usage.

Shared Documents
STUDY PROTOCOL, SAP, ICF, ANALYTIC CODE
Time Frame
2 years after completion of the pivotal trial that follows this pilot trial

Locations