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Phase 2 N=43 Randomized Quadruple-blind Treatment

Persica 002 Phase 1b PP353 vs Placebo in the Treatment of Low Back Pain

Chronic Low-back Pain

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

OutcomeResultp-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.
View full record on ClinicalTrials.gov →

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.

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