E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
The study objective is to evaluate the efficacy and safety of NexoBrid in removing burn eschar in hospitalized subjects with thermal burns. |
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E.1.1.1 | Medical condition in easily understood language |
Dead tissue of a burn wound has to be removed to promote healing of the wound. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Injuries, poisonings, and occupational diseases [C21] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 19.0 |
E.1.2 | Level | HLT |
E.1.2 | Classification code | 10043418 |
E.1.2 | Term | Thermal burns |
E.1.2 | System Organ Class | 100000004863 |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To demonstrate the efficacy of enzymatic eschar removal with NexoBrid by providing complete eschar removal as compared with Gel Vehicle. |
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E.2.2 | Secondary objectives of the trial |
To demonstrate the efficacy of enzymatic eschar removal with NexoBrid by providing earlier complete eschar removal, reduction in patients’ surgical burden and its related blood loss as compared to SOC,
and to assess the safety of NexoBrid compared to SOC, including demonstration that treatment with NexoBrid does not cause an unacceptable level of harm on wound closure outcome and long term outcomes of cosmesis and function.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Inclusion Criteria- Patient level
1. Males and females; ≥ 18 years of age,
2. Thermal burns caused by fire/flame, scalds or contact,
3. Patient total burns area ≥ 3% DPT and / or FT,
4. Patient total burns area should be ≤ 30% TBSA; SPT, DPT and/or FT in depth,
5. Informed consent can be obtained within 84 hours of the burn injury,
6. Patients who are willing and able to sign a written consent form.
Inclusion Criteria – Wound level
1. At least one wound (a continuous burn area) that is ≥0.5% TBSA (DPT and/or FT) (this
minimal wound size should not include face, perineal or genital),13
All planned target wounds (TWs) should meet the following criteria:
2. SPT areas that cannot be demarcated from DPT and FT areas should be less than 50% of the %
TBSA of the TW
3. Wound’s blisters can be removed/unroofed, as judged by the investigator. |
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E.4 | Principal exclusion criteria |
Exclusion Criteria- Patient level
1. Patients who are unable to follow study procedures and follow up period,
2. Modified Baux index14 ≥ 80,
3. Patients with burned charred fingers, 3rd degree in depth and possibly devoid of circulation,
4. Patients with abraded wound/s that cannot be treated by an enzymatic debrider application
(NexoBrid) will be excluded from the study,
5. Patients with electrical or chemical burns,
6. Patients with circumferential (≥ 80% of the limb circumference) DPT and/or FT burns defined
as Extremities at Risk (EAR) as described in section 11.8,
7. The following pre-enrollment dressings: a. Flammacerium, b. Silver Nitrate (AgNO3),
8. Patients with pre-enrolment wounds which are covered by eschar heavily saturated with iodine
or by SSD pseudoeschar (e.g. pseudoeschar as a result of >12 h SSD treatment),
9. Patients with pre-enrollment escharotomy,
10. Patients with diagnosed infections as described in Section 11.9 of study protocol,
11. Diagnosis of smoke inhalation injury,
12. Pregnant women (positive pregnancy test) or nursing mothers,
13. Poorly controlled diabetes mellitus (HbA1c>11%) in patients with known diabetes as captured in
the medical history,
14. BMI greater than 39.0 kg/m2 in patients with burns area of up to 15% TBSA or BMI greater than
34.0 kg/m2 in patients with burns area of more than 15% %TBSA,
15. ASA greater than 2 (Appendix 13- ASA classification system),
16. Cardio-pulmonary disease (MI within 6 months prior to injury, severe pulmonary hypertension,
severe COPD or pre-existing oxygen-dependent pulmonary diseases, severe broncho-pneumonia
within 1 month prior to injury, steroid dependent asthma or uncontrolled asthma),
17. Pre-existing diseases which interfere with circulation (severe peripheral vascular disease, severe
edema and/or lymphedema, regional lymph nodes dissection, significant varicose veins),
18. Any conditions that would preclude safe participation in the study or adding further risk to the
basic acute burn trauma (such as severe immuno-compromising diseases, life threatening
trauma, severe pre-existing coagulation disorder, severe cardiovascular disorder, significant
pulmonary disorder, significant liver disorder including post alcoholic abuse impaired function
or neoplastic disease, blast injury),
19. Chronic systemic steroid intake,
20. History of allergy and/or known sensitivity to pineapples, papaya, Bromelain or papain,
21. Current (within 12 months prior to screening) suicide attempt,
22. Mentally incapacitated adults who are incapable of giving legal consent Enrollment in any
investigational drug trial within 4 weeks prior to screening,
23. Current (within 12 months prior to screening) severe alcohol or drug use disorder (see definition
in section 1.1),
24. Prisoners and incarcerated,
25. Patients who might depend on the clinical study site or investigator. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint will be investigated at a "per patient" level:
Incidence of complete eschar removal: Demonstrate superiority over Gel Vehicle for eschar removal as measured by incidence of complete eschar removal assessed by the blinded assessor at the end of the topical agent soaking period (6 hours after start of the 1st topical application).
Or, in cases where 2 applications are performed, complete ER is assessed 6 hours after start of the 2nd Treatment. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
End of the topical agent soaking period.
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E.5.2 | Secondary end point(s) |
The following secondary endpoints will be evaluated in this study and compared between NexoBrid and SOC.
1. Reduction in surgical need- Demonstrate superiority of NexoBrid over SOC in reduction of surgical need for excisional eschar removal as measured by an analysis of incidence of surgical eschar removal (tangential/ minor/ avulsion/ Versajet and/or dermabrasion excision).
2. Earlier eschar removal- Demonstrate superiority of NexoBrid over SOC in reduction of the time to achieve complete eschar removal.
3. Blood loss- Demonstrate superiority of NexoBrid over SOC with regard to the blood loss incurred during the eschar removal procedures
Safety Endpoints
The following group of safety endpoints will be evaluated in this study and compared between NexoBrid and SOC. These endpoints are used to ensure that NexoBrid does not cause an unacceptable level of harm.
1. Time to reach complete wound closure assessed in days, starting from randomization date. Demonstrate that NexoBrid does not cause any clinically meaningful harm to the patients with respect to the wound healing process by comparing NexoBrid mean time to wound closure with SOC mean time to wound closure, where a difference of not more than 7 days difference will be interpreted as clinically not relevant.
2. Cosmesis and function at 12 months from wound closure - A measure of cosmesis, using MVSS, will be used to demonstrate - that treatment with NexoBrid does not cause any clinically meaningful deleterious effect on scars quality as compared to scars quality of burns treated with SOC, measured at 12 months from wound closure date, by a blinded assessor. Clinically meaningful deleterious effect will be defined as a NexoBrid group mean MVSS score higher by 1.9 or more units than the SOC group mean MVSS score.
3. Cosmesis and function at 24 months from wound closure - A measure of cosmesis, using MVSS, will be used to demonstrate that Treatment with NexoBrid does not cause any clinically meaningful deleterious effect on scars quality as compared to scars quality of burns treated with SOC, measured at 24 months from wound closure date, by a blinded assessor. Clinically meaningful deleterious effect will be defined as a NexoBrid group mean MVSS score higher by 1.9 or more units than the SOC group mean MVSS score. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
-time when complete eschar removal has been achieved.
- time when complete wound closure has been achieved
-12 and 24 months following to the confirmatory wound closure visit |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | Yes |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
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E.8.2.4 | Number of treatment arms in the trial | 3 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 10 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Belgium |
Canada |
Czech Republic |
Germany |
Israel |
Italy |
Romania |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 4 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 4 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |