E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Prevention of post abdominal surgery incisional infection. |
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E.1.1.1 | Medical condition in easily understood language |
Prevention of post abdominal surgery incisional infection |
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E.1.1.2 | Therapeutic area | Diseases [C] - Bacterial Infections and Mycoses [C01] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10078408 |
E.1.2 | Term | Surgical site infection |
E.1.2 | System Organ Class | 100000004862 |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To assess the anti‐infective efficacy of D‐PLEX administered concomitantly with the Standard of Care (SoC) over a period of 30 days post operation, by preventing surgical site infection (SSI), defined as superficial and/or deep infection, in the target incision, compared to the SoC treated control arm and to assess the safety of D‐PLEX administered concomitantly with the Standard of Care (SoC). |
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E.2.2 | Secondary objectives of the trial |
1. Infection rate as measured by the proportion of subjects with at least one abdominal target incisional infection event only, occurring within 30 days post abdominal (index) surgery and determined by a blinded and independent adjudication committee, in the population of subjects with target incision length >20cm. 2. Infection rate as measured by the proportion of subjects with at least one abdominal target incisional infection event, occurring within 30 days post abdominal surgery and determined by a blinded and independent adjudication committee, in the overall study population (incision ≥7cm). All-cause mortality and re-interventions through the abdominal incision (target) within 30 days post index surgery will be analysed as treatment failure. 3. Number (percent) of subjects with at least 1 score of ASEPSIS >20, within 30 days post abdominal (index) surgery (population of subjects with target incision length >20cm). |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
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E.3 | Principal inclusion criteria |
1. Subjects undergoing an elective colorectal surgery involving resection, with or without a stoma formation, that includes at least 1 abdominal incision that is ≥20cm (target incision). 2. Subjects are preoperative hemodynamically stable. (BP ≤180/110 and ≥90/60 mmHg, and HR≤120 and ≥60 bpm, and temperature ≤37.5°C and ≥35.5°C). 3. Male or non pregnant female. 4. Female of child bearing potential should have a negative pregnancy test (serum or urine dipstick) prior to index procedure. Note: All female subjects of child bearing potential must agree to use a highly effective method of contraception consistently and correctly for the duration of the study (see Section 8.6 CONTRACEPTIVE METHODS). 5. Subjects' age 18 years old and above at screening. 6. Subjects who sign the written Informed Consent Form. 7. Subjects who are willing and able to participate and meet all study requirements. 8. Survival expectancy of at least 60 days post randomization. |
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E.4 | Principal exclusion criteria |
1. Subjects with suspected/diagnosed intestinal perforation, bowel obstruction, intra abdominal abscess, or any emergency/urgent colorectal surgery with acute intestinal obstruction (ex. toxic colitis, ileus/sub-ileus, megacolon, diverticulitis, volvulus, etc.) 2. Subjects who underwent an intra abdominal surgery within the last 6 months prior to randomization. 3. Subjects with any preoperative active infection or who are receiving any antibiotic therapy in the past 1 week prior to randomization, excluding pre operative prophylaxis. 4. Subjects undergoing concomitant major procedures in addition to the colorectal resection. Female sterilization surgeries (i.e. salpingo-oophorectomy etc.), involvement of a small bowel procedure or cholecystectomy may be allowed, pending an advanced consultation and approval from the Sponsor . 5. Subjects who received any anti cancer treatment within the last 4 weeks of surgery. 6. Subjects who received radiation for colorectal cancer to the abdomen and/or pelvis area, prior to the planned abdominal surgery. 7. Subjects who received oral or IV Doxycycline or Tetracycline family antibiotics during the past 4 weeks prior to randomization. 8. Subjects with known allergy to Doxycycline and/or to the tetracycline family of drugs or to the D PLEX's excipients. 9. Subjects with known allergies to more than 3 substances (an allergy questionnaire will be completed during the screening process). 10. Subjects with history of severe allergic reaction to any substance, having required treatment with intravenous steroids/intramuscular epinephrine, or who in the opinion of the PI is at high risk of developing severe allergic reactions. 11. Subjects with End Stage Renal Disease (ESRD/ CKD stage 5). 12. Subjects with severe hepatic impairment. 13. Subjects with chronic urticaria. 14. Subjects diagnosed with CVA within the past 6 months prior to randomization. 15. Subjects who underwent any abdominal surgery and current planned index surgery involves re opening the scar of a prior abdominal surgery performed within the last 3 years. 16. Any subject with an active malignancy or with malignancy that has not been in complete clinical remission and without maintenance chemo or immunotherapy for at least 3 years. Excluding: Subjects with potentially resectable nonmetastatic colorectal cancer, that is the reason for the index surgery. Subjects who have had carcinoma in situ (or other cancer "in situ = Stage 0"), or squamous cell carcinoma of the skin, or basal cell carcinoma of the skin. Subjects with any additional non-violent cancer that does not require treatment 4 weeks prior to the surgery, and throughout the entire study duration. 17. Subjects with other concurrent severe and/or uncontrolled medical condition. 18. Psychiatric or any other disorder that compromises ability to provide informed consent for participation in this study. 19. Chronic alcoholic or drug abuse subjects. 20. Pregnant or breast feeding women or women of child bearing age who refuse or are prohibited of using an effective contraceptive method of birth control throughout study participation, including the safety follow up period. 21. Subjects who received any investigational drug within 30 days or 5 half lives prior to randomization to the study (whichever is longer) and through the study. 22. Subjects participating in any other interventional study. 23. Subjects who in the opinion of Investigator, are not eligible to participate in the study and/or to comply with the protocol requirements (e.g. due to a cognitive or medical condition). |
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E.5 End points |
E.5.1 | Primary end point(s) |
Infection rate as measured by the proportion of subjects with at least one abdominal target incisional infection event, occurring within 30 days post abdominal surgery and determined by a blinded and independent adjudication committee, in the study population with longer incision (>20cm). [abdominal incisional infection is composed defined as Deep Incisional Surgical Site Infection (DSSI) and/or Superficial Incisional Surgical Site Infection (SSSI)]. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
Key endpoints: 1. Infection rate as measured by the proportion of subjects with at least one abdominal target incisional infection event only, occurring within 30 days post abdominal (index) surgery and determined by a blinded and independent adjudication committee, in the population of subjects with target incision length >20cm. 2. Infection rate as measured by the proportion of subjects with at least one abdominal target incisional infection event, occurring within 30 days post abdominal surgery and determined by a blinded and independent adjudication committee, in the overall study population (incision ≥7cm). All-cause mortality and re-interventions through the abdominal incision (target) within 30 days post index surgery will be analysed as treatment failure. 3. Number (percent) of subjects with at least 1 score of ASEPSIS > 20, within 30 days post abdominal (index) surgery(population of subjects with target incision length >20cm).
Additional endpoints (population of subjects with target incision length >20cm): ● Incidence of SSSI during 30 days post index surgery. ● Incidence of DSSI during 30 days post index surgery. ● All‐cause mortality rate within 30 days post randomization. ● All‐cause mortality rate within 60 days post randomization. ● Time to adjudicated SSI during 30 days post index surgery. ● Number (percent) of subjects re‐admitted during 30 days post index surgery (for any reason) that have experienced adjudicated SSI during this re‐admission. ● Number (percent) of subjects who experienced at least 1 surgical re‐intervention due to adjudicated SSIs during 30 days post index surgery.
SSI related Additional Endpoints: ● Number (percent) of subjects with adjudicated SSI where at least one Doxycycline‐resistant bacteria have grown in bacteriology tests. ● Number (percent) of Doxycycline‐resistant bacteria out of all bacteria that were cultured during bacteriology test from subjects with adjudicated SSI. ● Number (percent) of subjects who experienced adjudicated SSI during 30 days post index surgery that were treated by IV antibiotic. ● Number of IV antibiotic treatment days, administered to subjects who experience adjudicated SSI during 30 days post index surgery. ● Average of subjects’ cumulative ASEPSIS assessment score (AUC) for subjects with adjudicated SSI during 30 days. ● Number (percent) of subjects with at least 1 score of ASEPSIS > 20 in subject with adjudicated SSI within 30 days post abdominal index surgery.
Identification of an SSI will be based on CDC/NHSN Patient Safety Component Manual criteria (January 2023, chapter 9) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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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 | Yes |
E.6.3 | Therapy | No |
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 | No |
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 | No |
E.8.1.4 | Double blind | Yes |
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 | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
Standard of Care IV prophylactic Antibiotic Treatment |
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E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 28 |
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 |
Israel |
Serbia |
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 | 2 |
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 | 2 |
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 |