Xerostomia in patients with a life-limiting condition or frailty: a double-blind placebo-controlled randomized clinical trial

2022-501084-41-00 Protocol 2022-501084-41-00 Therapeutic confirmatory (Phase III) Ended

Start 5 Mar 2024 · End 28 Apr 2025 · Status Ended · 1 EU/EEA countries · 1 sites · Protocol 2022-501084-41-00

Overview

Sponsor-declared trial summary

Phase Therapeutic confirmatory (Phase III)
Status Ended
Participants planned 120
Countries 1
Sites 1

Adult patients with a life-limiting condition or frailty who have the complaint dry mouth

This study intents to evaluate the effect of locally administered oral pilocarpine drops (3x 6 oral drops of pilocarpine per day ) in reducing complaints of dry mouth in a palliative population with xerostomia at the expense of limited adverse events, as compared to placebo.

Key facts

Sponsor
University Hospital Maastricht
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Not possible to specify
Trial duration
5 Mar 2024 → 28 Apr 2025
Decision date (initial)
2023-03-21
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

External identifiers

EU CT number
2022-501084-41-00
ClinicalTrials.gov
NCT05506137

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Pharmacodynamic

This study intents to evaluate the effect of locally administered oral pilocarpine drops (3x 6 oral drops of pilocarpine per day ) in reducing complaints of dry mouth in a palliative population with xerostomia at the expense of limited adverse events, as compared to placebo.

Secondary objectives 12

  1. Dry mouth score in the pilocarpine group at all time-points compared to placebo
  2. Responders at week 8 and 12 among all patients who started with off-label, compassionate use of pilocarpine drops and who stopped the use of pilocarpine drops at week 4
  3. Severity of xerostomia in the pilocarpine group at all time-points, as compared to placebo
  4. The Global Perceived Effect (GPE) of the use of pilocarpine drops at t= 2, t= 4, t= 8 and t = 12, as compared to placebo
  5. Oral Health-Related quality of life (OHRQoL) measured with the Geriatric Oral Health Assessment Index (GOHAI-NL) upon pilocarpine treatment at all time-points, as compared to placebo
  6. Health-Related Quality of Life (HRQoL) measured with the EQ-5D-5L questionnaire upon pilocarpine treatment at t = 0, t = 4, t = 8, and t = 12, as compared to placebo
  7. Patient-Reported Functional Status (PRFS) upon pilocarpine treatment at all time-points, as compared to placebo
  8. The durability of the effect of the use of pilocarpine drops at week 8 and 12 on xerostomia
  9. Possible side effects related to the intake of pilocarpine medication, measured from week 2 (t = 2, t = 4, t = 8, t = 12 weeks)
  10. The adherence rate of patients, measured at t = 2, t = 4, t = 8, t = 12 weeks
  11. Patients’ views on applicability of pilocarpine to reduce complaints of dry mouth, measured at t = 4, t = 8, t = 12 weeks
  12. The cost-effectiveness of pilocarpine treatment, measured at t = 0, t = 4, t = 8, t = 12 weeks

Conditions and MedDRA coding

Adult patients with a life-limiting condition or frailty who have the complaint dry mouth

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 4

  1. 18 years or older
  2. have a life-limiting condition or frailty
  3. have the complaint dry mouth ≥ 5 on an 11 point numerical rating scale (ranging from 0= no dry mouth to 10= worst dry mouth ever)
  4. fulfil the single SQ ‘Would I be surprised if my patient dies within the year? (no)

Exclusion criteria 3

  1. a life expectancy of less than 4 weeks (the primary endpoint at 4 weeks)
  2. have/had radiotherapy to the salivary glands or suffer from Sjögrens disease (impact on dry mouth)
  3. cognitively impaired to such an extent that there is insufficient understanding to complete questionnaires

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. The main trial endpoint is the percentage responders at week 4 of topical pilocarpine administration (3x 6 oral drops of pilocarpine per day) for which a clinically relevant response is defined as at least a 2-point reduction on the 11-point NRS, as compared to baseline.

Secondary endpoints 12

  1. Mean difference in NRS dry mouth scores in the pilocarpine group at all time-points compared to placebo
  2. Percentage responders at week 8 and 12 among all patients who started with off-label, compassionate use of pilocarpine drops and who stopped the use of pilocarpine drops at week 4
  3. Mean difference in severity of xerostomia as measured with the xerostomia inventory scale (sXI) in the pilocarpine group at all time-points compared to placebo
  4. The Global Perceived Effect (GPE) of the use of pilocarpine drops at t= 2, t= 4, t= 8 and t = 12, when compared to the placebo group
  5. Change in Oral Health-Related quality of life (OHRQoL) measured with the Geriatric Oral Health Assessment Index (GOHAI-NL) upon pilocarpine treatment at all time-points, when compared to the placebo group
  6. Change in Health-Related Quality of Life (HRQoL) measured with the EQ-5D-5L questionnaire upon pilocarpine treatment at t = 0, t = 4, t = 8, and t = 12, when compared to the placebo group
  7. Change in Patient-Reported Functional Status (PRFS) upon pilocarpine treatment at all time-points
  8. The durability of the effect of the use of pilocarpine drops at week 8 and 12 on xerostomia
  9. Possible side effects related to the intake of pilocarpine medication, measured from week 2 (t = 2, t = 4, t = 8, t = 12 weeks)
  10. The adherence rate of patients, measured at t = 2, t = 4, t = 8, t = 12 weeks
  11. Patients’ views on applicability of pilocarpine to reduce complaints of dry mouth, measured at t = 4, t = 8, t = 12 weeks
  12. The cost-effectiveness of pilocarpine treatment, measured at t = 0, t = 4, t = 8, t = 12 weeks

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Pilocarpine Hydrochloride

SUB14870MIG · Substance

Active substance
Pilocarpine Hydrochloride
Pharmaceutical form
SOLUTION
Route of administration
ORAL USE
Max daily dose
10.8 mg milligram(s)
Max total dose
10.8 mg milligram(s)
Max treatment duration
4 Week(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
Yes
Modification description
Instead of eye drops, oral drops are made

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

University Hospital Maastricht

Sponsor organisation
University Hospital Maastricht
Address
P. O. Box 616
City
Maastricht
Postcode
6200 MD
Country
Netherlands

Scientific contact point

Organisation
University Hospital Maastricht
Contact name
Prof. dr. MHJ van den Beuken - van Everdingen

Public contact point

Organisation
University Hospital Maastricht
Contact name
Prof. dr. MHJ van den Beuken - van Everdingen

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
Netherlands Ended 120 1
Rest of world 0

Investigational sites

Netherlands

1 site · Ended
Maastricht University
EPZ MUMC+, P Debyelaan 25, 6229 HX, Maastricht

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Netherlands 2023-04-11 2023-06-06

Oversight and notifications

Regulatory notifications under CTR Articles 38, 52, 53, 54 and 77

Temporary halts 1 · Art. 38 CTR

Temporary halt TH-9544

Halt date
2023-12-08
Member states concerned
Netherlands
Publication date
2023-12-11
Reason
Medicinal Product related
Explanation
After the blinded four week active study period, where patients receive pilocarpine or placebo as IMP, every participant is offered an eight week unblinded extension treatment period with off-label pilocarpine eye drops (Minims). The off-label pilocarpine was not delivered as IMP but as regular medication via the patients' pharmacy. This is reported as serious breach.
Follow-up measures
Actions taken
As soon as we became aware, the METC and the Grant Supplier (ZonMw) were informed (December 4 2023). The METC discussed the issue December 6, we received an answer December 8 2023. Based on the answer of the METC the inclusion was set on hold December 6.
Planned actions
A substantial amendment will be submitted: Study stop after 4 weeks (this is the primary outcome measure) instead of 12 weeks; (secondary) measurements at 8 and 12 weeks will no longer be assessed.
Patients who want to make use of off-label pilocarpine treatment after 4 weeks will be advised to contact their general practitioner.
Benefit-risk balance changed
No
Treatment stopped
No

Corrective measures 1 · Art. 77 CTR

Corrective measure CM-NL-0001

Member state
Netherlands
Publication date
2023-12-21
Type
3
Reason
2
Immediate action required
Yes
Justification
• Incorrect prescribing as the reason for the serious breach must be taken into account in the CTIS notification (in a update on this Serious Breach)

Toelichting:
Gaarne de melding in CTIS aanpassen door de onderzoeker. De oorzaak van de serious breach was het foutief (afwijkend t.o.v. het studieprotocol) regulier voorschrijven (pilocarpine medicatie op recept onherkenbaar als onderdeel van een studie) i.p.v. het voorschrijven van het open label IMP en het trialrecept in te leveren bij de clinical trial unit. Deelnemers werden tevens door de studiearts foutief verwezen naar een reguliere apotheek i.p.v. de clinical trial unit van het ziekenhuis.


• Request advice from one or more committee DB members

• The committee requests an approval of the Substantial Modification with removal of the extension phase before the study can start again.

Graag verwijs ik u ook nog naar de separate email correspondentie d.d. 13-12-2023 waarin gevraagd is deelnemers die nu nog in het onderzoek zitten te informeren over het feit dat zij niet kunnen doorstromen/participeren in deel II (optionele fase) van het onderzoek (week 5 t/m 12).

• Participants currently on IMP treatment need to be informed that the extension phase will be canceled and an impact-analysis should be written, in which the consequences for participant’s insurance, absence of drug accountability, inappropriate labeling, and the risks of a different dosage form (multidose dropper bottles versus single-use minims) must be discussed.


Aanvullend:
De commissie wil u graag attenderen op de regelgeving van regulier off-label voorschrijven, waarbij de basis is dat iets verdisconteerd dient te zijn in een richtlijn en waarvan de meerwaarde reeds is aangetoond t.o.v. een geregistreerd alternatief.

Off-label voorschrijven | Standpunt | Inspectie Gezondheidszorg en Jeugd (igj.nl)

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Summary of results Art. 37(4) CTR

TitleSubmission dateStatusType
SUMMARY OF THE RESULTS OF THE CLINICAL TRIAL Pilocarpine
SUM-128073
2026-04-09T09:14:17 Submitted Summary of Results

Layperson summary Annex V

TitleSubmission dateStatusType
Lekensamenvatting onderzoek Pilocarpinedruppels bij droge mond 2026-04-09T09:14:28 Submitted Laypersons Summary of Results

Documents 6 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Laypersons summary of results (for publication) Lekensamenvatting onderzoek Pilocarpinedruppels bij droge mond 1
Protocol (for publication) D1_Protocol 2022-501084-41-00 redacted 4
Protocol (for publication) D4_CRF Droge Mond studie 3
Summary of Product Characteristics (SmPC) (for publication) G2_SmPC Pilocarpine 1
Summary of results (for publication) SUMMARY OF THE RESULTS OF THE CLINICAL TRIAL Pilocarpine 1
Synopsis of the protocol (for publication) D1_Protocol synopsis_NL 2022-501084-41-00. 2

Application history

6 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2022-11-18 Netherlands Acceptable
2023-03-20
2023-03-21
2 SUBSTANTIAL MODIFICATION SM-1 2023-06-16 Netherlands Acceptable 2023-08-21
3 SUBSTANTIAL MODIFICATION SM-3 2023-12-22 Netherlands Acceptable
2024-03-04
2024-03-04
4 SUBSTANTIAL MODIFICATION SM-5 2024-06-20 Netherlands Acceptable
2024-07-11
2024-07-11
5 NON SUBSTANTIAL MODIFICATION NSM-5 2024-07-12
6 SUBSTANTIAL MODIFICATION SM-6 2024-08-09 Netherlands Acceptable
2024-08-27
2024-08-27