| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Immunocompromised patients at high risk of bloodstream infections with colonizing bacteria.  | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
| Patients with an compromised immune system and an increased risk of contracting infections in their bloodstream due to bacteria colonizing their gut.  | 
 
 
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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  | 16.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10066481 | 
 
| E.1.2 | Term  | Hematological malignancy | 
 
| E.1.2 | System Organ Class  | 100000004864 | 
 
 
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| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 16.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10067862 | 
 
| E.1.2 | Term  | Allogeneic stem cell transplantation | 
 
| E.1.2 | System Organ Class  | 100000004865 | 
 
 
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| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 16.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10054990 | 
 
| E.1.2 | Term  | Immunodeficiency secondary to organ transplantation | 
 
| E.1.2 | System Organ Class  | 100000004870 | 
 
 
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| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 16.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10021458 | 
 
| E.1.2 | Term  | Immunodeficiency secondary to transplantation chemotherapy | 
 
| E.1.2 | System Organ Class  | 100000004870 | 
 
 
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| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 16.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10021452 | 
 
| E.1.2 | Term  | Immunodeficiency secondary to chemotherapy (excl corticosteroids) | 
 
| E.1.2 | System Organ Class  | 100000004870 | 
 
 
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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  | 
| Assessment of efficacy and safety of an antimicrobial regimen in the short-term and long-term eradication of ESBL-E from the intestinal flora of immunocompromised high-risk patients. | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
| See secondary endpoints (section E 5.2) | 
 
 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
•	Fecal colonization with ESBL-E, as confirmed by a positive sample (rectal swab or stool sample) obtained within 14 days prior to study enrolment •	Ongoing or scheduled immunosuppression: o	allogeneic or autologous hematopoietic stem cell transplantation within 14 days after enrolment or o	chemotherapy with an expected duration of chemotherapy-associated neutropenia of at least 7 days within 14 days after enrolment or o	solid organ transplantation within 14 days after enrolment or o	administration of high-dose corticosteroids or other immunosuppressants for acute rejection of a solid organ transplant or for graft versus host disease after stem cell transplantation •	Age of at least 18 years •	Subject is not legally incapacitated •	Written informed consent from the trial subject has been obtained 
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| E.4 | Principal exclusion criteria | 
•	Current or scheduled administraton of ESBL-E active antibiotic treatment or prophylaxis after receipt of the most recent sample showing intestinal ESBL-E colonization and within 10 days after randomization •	Planned selective digestive tract decolonization (SDD) within 42 days following randomization •	Known hypersensitivity or allergy to any of the components of the study treatment •	Moderate or severe liver dysfunction at baseline, defined as aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels greater than three times the upper limit of normal (ULN), AND a total bilirubin level greater than two times the ULN •	Serum creatinine > 2 x the ULN •	Current pregnancy or nursing period •	Failure to use highly-effective contraceptive methods •	Concurrent participation in another clinical trial with an investigational drug is not permitted, unless the drug under study is related to the treatment of the underlying condition, transplantation or immunosuppression 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| •	Short-term intestinal eradication, defined as a fecal sample, negative for ESBL-E on day 6+/-1 and day 11+/-2 | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| on day 6+/-1 and day 11+/-2 | 
 
 
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| E.5.2 | Secondary end point(s) | 
•	Long-term intestinal eradication d28, defined as a fecal sample, negative for ESBL-E on day 28+/-4 •	Long-term intestinal eradication d42, defined as a fecal sample, negative for ESBL-E on day 42+/-4 •	Short-term non-intestinal eradication, defined as a combination of ESBL-E negative samples from skin, urine and the throat on day 6+/-1 and day 11+/-2 •	Long-term non-intestinal eradication d28, defined as a combination of ESBL-E negative samples from skin, urine and the throat on day 28+/-4 •	Long-term non-intestinal eradication d42, defined as a combination of ESBL-E negative samples from skin, urine and the throat on day 42+/-4 •	Short-term overall eradication, defined as a combination of ESBL-E negative samples from feces, skin, urine and the throat on day 6+/-1 and day 11+/-2 •	Long-term overall eradication d28, defined as a combination of ESBL-E negative samples from feces, skin, urine and the throat on day 28+/-4 •	Long-term overall eradication d42, defined as a combination of ESBL-E negative samples from feces, skin, urine and the throat on day 42+/-4 •	Emerging presence of non-ESBL multi-drug resistant bacteria in the intestine, defined as identification of vancomycin resistant Enterococci (VRE), 4 multi-drug-resistant gram negative rods (MRGN) according to the KRINKO definition or colistin-resistant bacteria in a fecal sample on day 6+/-1, day 11+/-2, day 28+/-4 or day 42+/-4 •	Association between the intestinal microbiome pattern and the outcome of eradication on baseline, day 6+/-1, day 11+/-2, day 28+/-4 or day 42+/-4 •	Quantitative assessment of intestinal ESBL-E burden on baseline, day 6+/-1, day 11+/-2, day 28+/-4 or day 42+/-4 •	Incidence and severity of AEs •	Rate of AE-related study drug discontinuations 
 
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| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| day 6+/-1, day 11+/-2, day 28+/-4 or day 42+/-4 | 
 
 
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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 |  Yes  | 
| E.6.4 | Safety |  Yes  | 
| E.6.5 | Efficacy |  Yes  | 
| E.6.6 | Pharmacokinetic |  No  | 
| 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) |  Yes  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  No  | 
| 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  |  Yes  | 
| E.8.2.3 | Other |  No  | 
| 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 | 2 | 
| E.8.5 | The trial involves multiple Member States |  No  | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA |  No  | 
| E.8.6.2 | Trial being conducted completely outside of the EEA |  No  | 
| E.8.7 | Trial has a data monitoring committee |  No  | 
| 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
                     | 
Premature termination of the trial will be considered if: •	The risk-benefit balance for the trial subject changes markedly •	It is no longer ethical to continue treatment with the IMP •	The sponsor considers that the trial must be discontinued for safety reasons •	An interim analysis or results of other research show that one of the trial treatments is superior or inferior to another •	It is no longer practicable to complete 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 | 0 | 
| E.8.9.1 | In the Member State concerned months | 11 | 
| E.8.9.1 | In the Member State concerned days | 0 |