Phase 2
N=43
Persica 002 Phase 1b PP353 vs Placebo in the Treatment of Low Back Pain
Chronic Low-back Pain
Bottom Line
View on ClinicalTrials.gov: NCT04238676 ↗Enrolled (actual)
43
Serious AEs
2.3%
Results posted
Mar 2026
Primary outcome: Primary: Incidence of Adverse Events — 3; 15; 18 Participants
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- PP353 (Drug); Placebo (Other)
- Age
- Adult, Older Adult · 18+ yrs
- Sex
- All
- Sponsor
- Persica Pharmaceuticals Ltd
- Primary completion
- Dec 2024
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Incidence of Adverse Events |
3; 15; 18 | — |
| PRIMARY Change From Baseline in Low Back Pain Numerical Rating Scale (LBP NRS) Score |
-3.36; -2.00 | 0.0284 sig |
| SECONDARY Change From Baseline in Roland Morris Disability Questionnaire-23 Score |
-9.43; -5.54 | 0.0462 sig |
| SECONDARY Clinically Relevant Improvement (≥30%) in RMDQ-23 |
94.4; 47.4 | 0.0064 sig |
| SECONDARY Change From Baseline in Oswestry Disability Index |
-16.91; -8.28 | 0.0500 |
Summary
A Phase 1b study to investigate the efficacy of PP353 compared to placebo in the treatment of chronic low back pain associated with bone oedema.
Eligibility Criteria
Inclusion Criteria
- Aged between 18 and 70 years, inclusive.
- Chronic low back pain in the area associated with vertebral body endplate bone oedema (Modic 1) or vertebral body endplate bone oedema and fat (Modic 1 and 2) at a single lumbar level.
- Average LBP NRS score at screening and at Day 1 pre-randomisation ≥ 4 on chronic pain medication and ≥ 6 if not on chronic pain medication; it should be higher than the leg pain NRS score
- RMDQ-23 score ≥ 9 at screening and at Day 1 pre-randomisation.
- Current episode of chronic low back pain has lasted for ≥ 6 months at the time of randomisation.
- Bodyweight of ≥ 50 kg and ≤ 120 kg.
- Failure of standard of care therapies used by their treating physician
Exclusion Criteria
- Any vertebra with Modic 2 only lesions which:
- in the opinion of the investigator, after deep palpation of the vertebral spine, is contributing to the low back pain and/or
- are present within 2 vertebrae from the target lumbar disc.
- The target lumbar disc has lost more than half its original anticipated height at the centre or it is < 5mm in height over the central 15 mm portion
- A clear alternative cause for back pain
- Gross facet joint degeneration or cases where the investigator believes the primary pain generator to be the facet joints
- Interventional back procedure in the 6 months prior to screening or major surgery in the 12 weeks prior to screening
- History of alcohol abuse or drugs of abuse in the past 2 years
- Any other significant illness
- Previously been treated with antimicrobial agents for their low back pain or previously received any antimicrobial intradiscal injection.
Data sourced from ClinicalTrials.gov (NCT04238676). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.