Repeated Mesenchymal Stem Cell Therapy for Radiation-Induced Hyposalivation and Xerostomia in Head and Neck Cancer Survivors

NCT ID: NCT07290946

Last Updated: 2025-12-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-31

Study Completion Date

2028-12-31

Brief Summary

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Dry mouth leads to debilitating symptoms 24/7. The two primary causes for dry mouth are Sjögrens disease and after radiotherapy of a head and neck cancer. Former clinical trials have investigated mesenchymal stem cell treatment for dry mouth with promising results. However, few of the participants evolved normal salivary flow rate. Therefore, in this randomized clinical trial, two treatments of mesenchymal stem cells are administered, 4 months apart. This has not been done before.

The hypothesis is that two treatments of mesenchymal stem cells results in a higher salivary flow rate and ameliorate symptoms from dry mouth.

Detailed Description

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Conditions

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Xerostomia Due to Hyposecretion of Salivary Gland Xerostomia Due to Radiotherapy Sjögren´s Syndrome

Keywords

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Mesenchymal Stem Cell Sjögren Radiation xerostomia Head and Neck cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
One research assistant preparing the treatments are unmasked

Study Groups

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Mesenchymal Stem Cells

Treatment with intraglandular injections in both submandibular glands with allogeneic adipose derived mesenchymal stem cells

Group Type EXPERIMENTAL

ALLOGENEIC AND EXPANDED ADIPOSE TISSUE-DERIVED MESENCHYMAL STEM CELLS

Intervention Type DRUG

Suspended in 10% DMSO. Manufactured by OUH CELL BENCH in Odense, Denmark.

Placebo

Treatment with intraglandular injections in both submandibular glands sterile isotonic saline water

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Sterile isotonic saline water

Interventions

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ALLOGENEIC AND EXPANDED ADIPOSE TISSUE-DERIVED MESENCHYMAL STEM CELLS

Suspended in 10% DMSO. Manufactured by OUH CELL BENCH in Odense, Denmark.

Intervention Type DRUG

Placebo

Sterile isotonic saline water

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Former radiotherapy for squamous cell carcinoma, or adenocarcinoma, of the nasal sinus, larynx, pharynx, and oral cavity
2. WHO Performance status 0-1
3. Presence of xerostomia daily
4. UWS of 0.05 mL/min to 0.5 ml/min
5. Age above 18
6. Informed consent
7. 0.5 year follow-up of the cancers in 1. with no recurrence

Exclusion Criteria

1. Any malignant cancer diagnosis excluding head and neck cancers
2. Xerogenic medications at inclusion
3. Penicillin or streptomycin allergy assessed by health personnel
4. Any other previous or active disease of the salivary glands (e.g. Sjögren's Disease, sialolothiasis)
5. Previous submandibular surgery or biopsy
6. Pregnancy or planned pregnancy until 4 months after second treatment
7. Breastfeeding
8. Smoking within the last 6 months
9. Alcohol abuse within the last 6 months (consumption must not be above 10 units/week (Danish National board health alcohol guidelines)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Christian von Buchwald

OTHER

Sponsor Role lead

Responsible Party

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Christian von Buchwald

MD, DMSc, professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Christian von Buchwald, MD, Professor

Role: STUDY_CHAIR

Copenhagen University Hospital - Rigshospital

Central Contacts

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Joachim Hansen, M.D

Role: CONTACT

Phone: +4523312552

Email: [email protected]

Other Identifiers

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2025-522559-25-00

Identifier Type: CTIS

Identifier Source: secondary_id

2025-522559-25-00

Identifier Type: -

Identifier Source: org_study_id