D-PLEX 311: Safety and Efficacy of D-PLEX in the Prevention of Post Abdominal Surgery Incisional Infection

Study Overview
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Brief Summary
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Phase III, Prospective, Multinational, Multicenter, Randomized, Controlled, Two-arm, Double Blind Study to assess Efficacy and Safety of D-PLEX Administered Concomitantly with the Standard of Care (SoC), compared to a SoC treated control arm, in prevention of post abdominal surgery incisional infection.

Detailed Description
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D-PLEX is a new formulation of extended controlled release of Doxycycline in the applied area for about 30 days. This study is aimed to assess the safety and efficacy of D-PLEX in prevention of post abdominal surgery incisional infection. The study population includes male and female, 18 years old and above at screening, undergoing an elective colorectal surgery involving resection, with or without a stoma, that includes at least 1 incision that is > 10 cm (target incision). Eligible and willing subjects will be randomly allocated into 2 blinded study arms D-PLEX with SOC or SOC alone. D-PLEX will be applied during the surgery at the final stage of incision closure. All patients will be followed up for additional 5 visits over 2 months, for safety and incisional wound assessment. This will include blood tests for hematology and chemistry well as physicians assessment of the incisional wound. The final number of subjects will be determined following a comparative interim analysis for an early efficacy or futility stop or unblinded sample size re-estimation: when about 750 subjects will complete their 30 days (1 month) follow-up and evaluated for primary endpoint

Official Title
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D-PLEX 311- Phase III, Prospective, Multinational, Multicenter, Randomized, Controlled, Two-arm, Double Blind Study to Assess Efficacy and Safety of D-PLEX In Prevention of Post Abdominal Surgery Incisional Infection(SHIELD I)

Conditions
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Surgical Site Infection, Colon Surgery, Abdominal Surgery, Post-Op Infection

Intervention / Treatment
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* Drug: D-PLEX
* Other: Standard of Care (SoC)


Participation Criteria
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Eligibility Criteria
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INCLUSION CRITERIA: Subjects undergoing an elective colorectal surgery involving resection, with or without a stoma formation, that includes at least 1 abdominal incision that is > 10cm (target incision). Subjects are preoperative hemodynamically stable Male or non-pregnant female. Female of child-bearing potential should have a negative pregnancy test prior to index procedure. Subjects' age 18 years old and above at screening. Subjects who sign the written Informed Consent Form. Subjects who are willing and able to participate and meet all study requirements. Survival expectancy of at least 60 days post randomization EXCLUSION CRITERIA Subjects with suspected/diagnosed intestinal perforation, intra-abdominal abscess, or any emergency/urgent colorectal surgery with acute intestinal obstruction (ex. toxic colitis, ileus/sub-ileus, megacolon, diverticulitis, volvulus, ect.) Subjects who underwent an intra-abdominal surgery within the last 6 months prior to randomization. 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. Subjects undergoing concomitant major procedures in addition to the abdominal surgery, including concomitant repair of ventral hernia. Salpingo-oophorectomy and cholecystectomy are allowed. Subjects who received any anti-cancer treatment within the last 4 weeks of surgery. Subjects who received radiation for colorectal cancer to the abdomen area, prior to the planned abdominal surgery. Subjects who received oral or IV Doxycycline or Tetracycline family antibiotics during the past 4 weeks prior to randomization. Subjects with known allergy to Doxycycline and/or to the tetracycline family of drugs or to the D-PLEX's excipients. Subjects with known allergies to more than 3 substances (an allergy questionnaire will be completed during the screening process). 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. Subjects with End Stage Renal Disease (ESRD/ CKD stage 5). Subjects with severe hepatic impairment. Subjects with chronic urticaria. Subjects diagnosed with CVA within the past 6 months prior to randomization. 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. Any subject with an active malignancy, other than resectable non-metastatic colorectal cancer, that is the reason for the index surgery, or carcinoma in situ (or other cancer in situ = Stage 0), or squamous cell carcinoma of the skin, or basal cell carcinoma of the skin, or a malignancy that has not been in complete clinical remission and without maintenance chemo or immunotherapy for at least 3 years. Subjects with other concurrent severe and/or uncontrolled medical conditions. Psychiatric or any other disorder that compromises ability to provide informed consent for participation in this study. Chronic alcoholic or drug abuse subjects. 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. 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. Subjects participating in any other interventional study. 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).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Males and females, >18 years old, undergoing scheduled abdominal colon surgery involving resection and anastomosis or a stoma, who meet the inclusion criteria and none of the exclusion criteria and provide signed informed consent will be enrolled in the study. The final number of subjects will be determined following a comparative interim analysis for an early efficacy or futility stop or unblinded sample size re-estimation: when about 750 subjects will complete their 30 days (1 month) follow-up and evaluated for primary endpoint.
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: D-PLEX+SoC<br>D-PLEX is provided to suitable and willing study subjects as an adjunct to the SoC treatment | Drug: D-PLEX<br>* D-PLEX is a new formulation of extended release of Doxycycline. Each 5g D-PLEX vial contains 54.6mg Doxycycline free base (1.09%), which is equivalent to 63mg Doxycycline hyclate (1.26%). D-PLEX is supplied as a sterile powder to be reconstituted to paste in the operating room, using standard aseptic techniques and is intended for single administration. The non-active components of the extended release antibiotic formulation are β Tri-Calcium polymer and a lipid matrix. All formulation components are biodegradable.<br>|
| Other: Standard of care<br>The SoC for prophylactic antibiotic treatment is based on international guidelines | Other: Standard of Care (SoC)<br>* prophylactic, pre-operation per institution guidelines<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To assess the anti-infective efficacy of D-PLEX over a period of 30 days post operation, by preventing surgical site infection (SSI), defined as superficial and deep infection, in the target incision(s), compared to the SoC treated control. | Infection rate as measured by the proportion of subjects with at least one abdominal incisional infection event, as determined by a blinded and independent adjudication committee, within 30 days post abdominal surgery. [abdominal incisional infection is composed of Deep Incisional Surgical Site Infection (DSSI) and Superficial Incisional Surgical Site Infection (SSSI)]. | By day 30 post surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assessment of Infection rate in patient undergoing abdominal colon surgery | infection rate as measured by the proportion of subjects with at least one abdominal incisional infection event, as determined by a blinded and independent adjudication committee, within 30 days post abdominal surgery. [abdominal incisional infection is composed of Deep Incisional Surgical Site Infection (DSSI) and Superficial Incisional Surgical Site Infection (SSSI)]. | At study visits: day 1, day 5, day 14 and day 30 post surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Surgical site infection, Abdominal surgery, Colon and small bowl surgery