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Allogeneic BM-MSCs in Patients With Painful Lumbar Facet Arthropathy

CELLKINE: Phase II Study Evaluating Safety and Preliminary Efficacy of Allogeneic, Culture-Expanded Bone Marrow-Derived Mesenchymal Stem Cells in Subjects With Painful Lumbar Facet Joint Arthropathies

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06001853
Acronym
CELLKINE II
Enrollment
40
Registered
2023-08-21
Start date
2023-11-03
Completion date
2027-12-01
Last updated
2026-07-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Facet-Mediated Low Back Pain, Lumbar Facet Joint Osteoarthritis

Brief summary

The purpose of this research study is to evaluate the safety and effect of bone marrow-derived stem cells for the treatment of low back pain.

Detailed description

This study is a prospective, double blinded, randomized, cross over phase II study evaluating efficacy and safety of intra-articularly injected BM-MSCs in the treatment of painful facet joint arthropathy (FJA). Patients with mild to severe facet arthropathy will be considered for this study. A total of 40 patients with diagnosis evidence of chronic low back pain associated with FJA and positive outcome of a MBB will be recruited. After confirming eligibility, patients will be randomized to Arm A: Treatment or Arm B: DMSO. After 6 months, patients randomized to Arm B: DMSO will be unblinded and may cross-over to Arm A: treatment then be followed for 12 months.

Interventions

DRUGBM-MSC injection

BM-MSCs at the dose 10 x 106 in 1 ml per facet joint for a total of 2 joints

DRUGDSMO Injection

After 6 months, patients randomized to Arm B: DMSO will be unblinded and re-assigned to Arm A: treatment then be followed for 12 months.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Masking description

This is a double-blind study. Patients and providers will be blinded. After 6 months, patients randomized to Arm B: DMSO will be unblinded and may crossed over to Arm A: treatment then be followed for 12 months. The statistician will generate the randomization list. Research personnel involved in patient recruitment and other activities will have no access to the randomization list.

Intervention model description

After confirming eligibility, patients will be randomized to Arm A: BM-MSC or Arm B: DMSO. After 6 months, patients randomized to Arm B: DMSO will be unblinded and may cross-over to Arm A: treatment then be followed for 12 months or continue with Arm B for another 6-month follow-up without BM-MSC injections. All patients will be followed up to 12 months after BM-MSCs.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

To be eligible for inclusion into this study, the subjects must fulfill all the following criteria: 1. Male or female subjects ages 18 and older Persons of childbearing potential must be non-nursing and have a negative serum pregnancy test to be included in the trial and will agree to use adequate contraception (hormonal or barrier method or abstinence) from the time of screening to a period of up to 12 months following completion of the drug treatment cycle. Persons of childbearing potential are defined as premenopausal and not surgically sterilized, or post-menopausal for fewer than 2 years. A urine pregnancy test will be performed prior to the administration of the study drug to confirm negative results. If the urine pregnancy test is positive, the study drug will not be administered, and the result will be confirmed by a serum pregnancy test. Serum pregnancy tests will be performed at a central clinical laboratory, whereas urine pregnancy tests will be performed by qualified personnel using a kit. Persons becoming pregnant during the study will continue to be monitored for the duration of the study or completion of the pregnancy, whichever is longer. Monitoring will include perinatal and neonatal outcomes. Any SAEs associated with pregnancy will be recorded. The requirement for radiation (X-ray) will be removed. 2. Clinical diagnosis of symptomatic facet joint arthropathy involving the L1-S1 facets. 3. Radiographic evidence of facet arthropathy involving the L1-S1 facets. 4. Chronic low back pain with or without referred pain to the buttock, groin, or proximal thigh. Chronic low back pain is defined as the following: * Low back pain for at least 6 months * Subjects should be treated with currently available standard therapies prior to receiving an investigational product, and only subjects who do not have an adequate response to standard therapies. Have at a minimum undergone supervised physical therapy, such as daily walking routines, therapeutic exercises, and back education programs specifically for the treatment of low back pain AND taken a pain medication for back pain (e.g. NSAID and/or opioid medication). * Low back pain of at least 3 to 9 on numeric rating scale (NRS) (average pain in the past 7 days). 5. Confirmation of facet joint related pain by double medial branch blocks with positive results. Positive results are defined as at 75% or more improvement on pain. 6. Full understanding of the requirements of the study and willingness to comply with the treatment plan, including laboratory tests, diagnostic imaging, and follow-up visits and assessments. 7. Can provide written informed consent and complete HIPAA documentation after the nature of the study is fully explained and prior to any study-related procedure.

Exclusion criteria

Subjects will be excluded from participating in the study if they meet any of the following

Design outcomes

Primary

MeasureTime frameDescription
Clinical assessment of nature, incidence, and severity of adverse events (AEs)Up to 18 monthsClinical examination face-to-face during follow-up visits
Self-reported assessment of nature, incidence, and severity of AEsUp to 18 monthsSpontaneous subject reports
Study personnel assessment of nature, incidence, and severity of AEsUp to 18 monthsSubject interview by study personnel
PROMIS-CATsUp to 18 monthsPatient-Reported Outcomes Measurement Information System to evaluate and monitor physical, mental, and social health. Standardized response scores ranges vary from1 to 5 (e.g., 1= None to 5=Very severe) or reversed (5=None to 1=Very severe) to ensure that higher scores for responses always indicate better health.
Numeric Rating Scale (NRS) for low back painUp to 18 monthsA visual scale of 0 being "no pain" and 100 being "worst pain Imaginable'" to assess pain status

Secondary

MeasureTime frameDescription
Changes from baseline evaluated by MRIUp to 18 monthsFacet anatomical structures with focus on effusion, bone marrow lesions and peri-articular edema, osteophytes and degree of facet synovitis will be assessed
Narcotic Use QuestionnaireUp to 18 monthsSelf-reported questionnaire to assess narcotic intake. Four questions to record narcotic drug usage (yes or no), frequency and length.
Work Status QuestionnaireUp to 18 monthsSelf-reported short questionnaire to assess work status at present. Simple 3 questions to record ability to work and to attend to work.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORWenchun Qu, MD, PhD

Mayo Clinic

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 22, 2026