ClinicalTrials.gg
RecruitingNCT06071962Updated Jan 31, 2024

Long Term Efficacy and Tolerability of AP707 in Patients With Chronic Back Pain

A Phase 3 interventional study of Adezunap (AP707) and Placebo in Pain, Pain Syndrome and Pain, Chronic, sponsored by Apurano Pharmaceuticals GmbH. Recruiting at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-01-31.

Sponsored by Apurano Pharmaceuticals GmbH · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Sep 2024, 2 years 1 month ago, but the record still lists the study as recruiting.
  • Started Nov 2023; still recruiting 3 years later.
Phase
Phase 3
Study type
Interventional
Enrollment
558
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Over the last years a rising medical need for treatment of chronic pain was identified. Based on previous findings indicating the pain modulating effects of cannabinoids in chronic pain disorders, this clinical trial investigates the long term efficacy and tolerability of the THC-focused nano endocannabinoid system modulator AP707 in patients with chronic back pain disorders. Patients receive AP707 or placebo over the course of 14 weeks as an add-on to the standard of care. Changes in pain intensity, quality of life and sleep and others measures are monitored through different scales to assess the efficacy of AP707 in patients with chronic back pain.

02

Conditions studied

  • Pain
  • Pain Syndrome
  • Pain, Chronic
  • Chronic Pain
  • Chronic Pain Syndrome
  • Back Pain
  • Lower Back Pain
  • Lower Back Pain Chronic

Keywords

  • Adezunap
  • Pain Therapy
  • Pain
  • Pain Syndrome
  • Chronic Pain
  • Chronic Pain Syndrome
  • Back Pain
  • Chronic Back Pain
  • Lower Back Pain
  • Lower Back Pain Chronic
  • THC
  • Tetrahydrocannabinol
  • Delta-9-Tetrahydrocannabinol
  • Cannabis
  • Cannabinoids
03

In context

Pain

10,054 studies on the registry are indexed under Pain; 1,649 are open to participants now.

This study's planned enrollment of 558 is above the median of 66 across 8,493 interventional studies indexed under Pain.

Browse Pain studies →

Lead sponsor

Apurano Pharmaceuticals GmbH is the lead sponsor of 8 studies on the registry; 8 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Signed and dated form
  2. Patients with chronic back pain since at least 3 months
  3. Female and male patients (> 18 years)
  4. Patients with more than 1 year
  5. Patients with optimized sCPT on study entry as defined in section 3.1.1 and section 3.1.3 of the study protocol
  6. Willingness of study patients of both sexes to use reliable during study participation and for three months after taking the last study medication
  7. Good command of German language, in order to understand questionnaires in German
  8. Current moderate to severe pain with pain intensity > 5 on Numeric Rating Scale (NRS, 0 - 10) and thus an existing need for further pain therapy
  9. Completed QUISS (Quantification Inventory for Somatoform Syndromes) questionnaire with 45 or less score points
  10. Completed painDETECT questionnaire with 20 or more score points

Exclusion criteria

Exclusion Criteria:

  1. Medical history of or intolerance to the product or its ingredients or to ingredients of similar chemical structure
  2. Known intolerance to cannabinoids or cannabis products.
  3. Participation in another clinical trial within the last four weeks prior to inclusion.
  4. Pregnant or nursing women (as excluded by pregnancy testing at visit 1).
  5. Other medical conditions that do not allow the trial subject to appraise the nature, scope, and potential consequences of the clinical trial
  6. Indications that the trial subject is unlikely to comply with the study protocol (e.g., unwillingness to cooperate)
  7. Known use of medicinal cannabis products within the last 8 weeks
  8. Active malignant tumor disease, tumor pain, or other dominant severe pain other than that of the study indication
  9. Known history of severe liver or kidney diseases
  10. Known history of severe cardiovascular disease
  11. Known history of or acute mental illness such as severe depression, psychosis, bipolar disorder, mania, anxiety, or obsessive-compulsive disorder
  12. Known history of addictive disease (e.g., alcohol, medication, drug addiction)
  13. Answered during Screening less than 12 times of 18 the pain intensity (NRS) inquiry
  14. Laboratory liver values: (ALT, GPT) > 3 x (Upper Limit of Normal range), Aspartate aminotransferase (AST, GOT) > 3 x ULN, Alkaline phosphatase (AP) > 2.5 x ULN, and for > 1.5 x ULN
  15. Laboratory renal value: Serum creatinine > 1.5 ULN
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
558 participants (estimated)

Study arms

  • Experimental
    Treatment group

    Sublingual spray with maximum application of 16 actuations per day or a maximum daily dose of 17,6mg THC distributed over 4 daily intakes.

    Drug: Adezunap (AP707)

  • Experimental
    Control group

    Sublingual spray with maximum application of 16 actuations per day distributed over 4 daily intakes.

    Drug: Placebo

Interventions

  • Sublingual spray with maximum application of 16 actuations per day or a maximum daily dose of 17,6mg THC distributed over 4 daily intakes.

  • DrugPlacebo

    Sublingual spray with maximum application of 16 actuations per day distributed over 4 daily intakes.

06

What researchers measure

Primary outcomes

  1. Change in pain level on the Numeric Rating Scale (NRS, 0-10) between baseline and at treatment week 14 (end of first treatment phase) in comparison of study arm 1 (verum) and study arm 2 (placebo)

    Time frame: Once daily in week 4 and 14

Secondary outcomes

  1. Change in pain level on the Numeric Rating Scale (NRS, 0-10) between baseline and at treatment week 26 (end of second treatment phase) in comparison of study arm 1 (verum) and study arm 2 (placebo)

    Time frame: Once daily in week 4 and 26

  2. Change in pain level on the Numeric Rating Scale (NRS, 0-10) between baseline and at treatment week 52 (end of third treatment phase) in comparison of study arm 1 (verum) and study arm 2 (placebo)

    Time frame: Once daily in week 4 and 52

  3. Change in the pain score of the Neuropathic Pain Symptom Inventory (NPSI) questionnaire between baseline and at treatment week 14, treatment week 26 and treatment week 52 in comparison of study arm 1 (verum) and study arm 2 (placebo)

    Time frame: Once in week 1, 14, 26 and 52

  4. Change in pain level on the Numeric Rating Scale (0-10) between baseline and in treatment week 5, 11, 18, 22, 30, 34, 43, 47 in comparison of study arm 1 (verum) and study arm 2 (placebo)

    Time frame: Several times weekly in week 4, 5, 11, 18, 22, 30, 34, 43 and 47

  5. Responder analysis for endpoints 1), 2), 3) and 4) for treatment week 14, 26 and 52

    1. Proportion of patients who experienced \> 30 % improvement in pain score (Numeric Rating Scale) 2. Proportion of patients who experienced \> 40 % improvement in pain score (Numeric Rating Scale) 3. Proportion of patients who experienced \> 50 % improvement in pain score (Numeric Rating Scale)

    Time frame: Week 14, 26 and 52

  6. Change in sCPT (percentage of change in dosage and percentage of change in combination of analgesic measures) in both study arms from start to week 14

    Time frame: Week 14

  7. Change in pain-related impairment according to von Korff et al. from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  8. Change in psychological distress using Depression Anxiety Stress Scales Short Form (DASS-21) questionnaire from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  9. Change of Patient Global Impression of Change (PGIC) from start to week 14, 26, and 52

    Time frame: Week 14, 26 and 52

  10. Change in quality of life using the Veterans RAND (VR-12) questionnaire from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  11. Change in sleep quality using the Regensburg Insomnia Scale (RIS) from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  12. Change in pain score of the Brief Pain Inventory - Short Form (BPI-SF) questionnaire from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  13. Area under NRS-curve until treatment week 5, 11, 14, 18, 22, 26, 30, 34, 39, 43, 47, 52

    Time frame: Week 5, 12, 18, 22, 26, 30, 34, 39, 43, 47 and 52

  14. Change in VR-12 components (physical component summary PCS, mental component summary MCS) from start to week 14, 26, and 52

    Time frame: Week 1, 14, 26 and 52

  15. Number of patients with rescue medication over the course of the clinical trial and within periods: until treatment week ≤5, ≤11, ≤14, ≤18, ≤22, ≤26, ≤30, ≤34, ≤43, ≤47, ≤52

    Time frame: Week 5, 11, 14, 18, 22, 26, 30, 34, 43, 47 and 52

Other outcomes

  1. Number and severity of adverse events (AE)

    Time frame: Week 1 to 52

07

Study locations

1 of 1 sites recruiting
  • Klinikum Rechts der Isar (Zentrum für Interdisziplinäre Schmerztherapie)
    Munich, Bavaria 81675, Germany
    Recruiting
    • Katharina Haas · Contact
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 31, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06071962
Lead sponsor
Apurano Pharmaceuticals GmbH
Responsible party
Sponsor
First posted
Oct 10, 2023
Start date
Nov 2, 2023
Primary completion
Sep 30, 2024 (estimated)
Completion
Dec 31, 2024 (estimated)
Last update
Jan 31, 2024

Study contacts

Marko Blisse
Contact
marko.blisse@apurano.de
+49 8024 46869 28

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Adezunap

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