Randomized, Double Blind, Placebo Controlled, Two-Arms, Multicenter, Post Authorization Efficacy and Safety Study (Paes) to Confirm and Collect More Clinical Data of Buccalin® Tablets in the Prophylaxis of Recurrent Lower Respiratory Tract Infections (RLRTIs).

2024-512937-34-00 Protocol BUC-01-23 Therapeutic use (Phase IV) Ongoing, recruiting

Start 6 Aug 2025 · Status Ongoing, recruiting · 1 EU/EEA countries · 9 sites · Protocol BUC-01-23

Overview

Sponsor-declared trial summary

Phase Therapeutic use (Phase IV)
Status Ongoing, recruiting
Participants planned 240
Countries 1
Sites 9

RECURRENT LOWER RESPIRATORY TRACT INFECTIONS (RLRTIS).

To confirm and collect more clinical data of Buccalin tablets in the prophylaxis of Recurrent Lower Respiratory Tract Infections (RLRTIs).

Key facts

Sponsor
Laboratorio Farmaceutico S.I.T. - Specialita' Igienico Terapeutiche S.r.l.
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Respiratory Tract Diseases [C08]
Trial duration
6 Aug 2025 → ongoing
Decision date (initial)
2024-10-17
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
No

External identifiers

EU CT number
2024-512937-34-00
WHO UTN
U1111-1308-7652
ClinicalTrials.gov
NCT06736288

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety

To confirm and collect more clinical data of Buccalin tablets in the prophylaxis of Recurrent Lower Respiratory Tract Infections (RLRTIs).

Conditions and MedDRA coding

RECURRENT LOWER RESPIRATORY TRACT INFECTIONS (RLRTIS).

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 4

  1. Patients willing and able to provide voluntary informed consent and to follow protocol requirements.
  2. Male or females from 18 to 99 years old, (Adult, Older Adult)
  3. Patients with Recurrent LRTIs including tracheitis, tracheobronchitis, acute bronchitis and exacerbations of chronic lung disease (asthma and/or COPD and/or bronchiectasis), who present with both of the following: a. ≥2 episodes within 12 months prior to the run-in period based on patient reported medical history (to access the run-in period) b. ≥2 episodes during the run-in period documented by appropriate microbiological diagnostic test (to access the treatment period)
  4. Patients: a. Not vaccinated Or b. Vaccinated against the most common pathogens for respiratory infection (within 12 months prior to the run-in period or during the run-in period, but not during the treatment period): - Anti-pertussis vaccination - Covid-19 vaccination - Respiratory Syncytial Virus vaccination - Influenza vaccination - Pneumococcal vaccination

Exclusion criteria 19

  1. Female patient: pregnant, lactating or planning pregnancy (Female of child-bearing potential will undergo urine pregnancy test).
  2. History of known liver damages defined by the METAVIR classification (F1-F4).
  3. Malignancies with a remission period of < 5 years.
  4. Injection or oral administration of steroids within 4 weeks prior to randomization.
  5. Use of immunosuppressants, immunostimulants, or gamma globulins within 6 months prior to randomization.
  6. Previous use within 6 months prior to randomization or ongoing use of bacterial lysates.
  7. Any major surgery within the last 3 months prior to randomization.
  8. Wheezing documented to be caused by gastroesophageal reflux.
  9. Patient legally or mentally incapacitated unable to give informed consent for the participation in this study.
  10. Patient who is unable or unwilling to comply with the appointments or with all the requirements of the Protocol.
  11. Female of potential child-bearing that does not use at least one effective contraceptive method for the entire study.
  12. Contraindication or known hypersensitivity to the active ingredients of bacterial lysates or any excipients listed in the ingredients.
  13. Pneumonia (based on the EMA Referral Procedure EMEA/H/A-31/1465).
  14. Known history of tuberculosis and/or cystic fibrosis.
  15. Known history of immunodeficiency diseases (e.g., HIV infection, AIDS, or any type of congenital or iatrogenic immune deficiency, including IgA deficiency).
  16. Severe heart failure (NYHA class III and IV).
  17. Haematologic diseases including severe anaemia (defined according to the National Cancer Institute as Hemoglobin < 8.0 g/dL).
  18. Renal failure (eGFR < 30 mL/min).
  19. History of autoimmune diseases and acute intestinal infections, as reported in Buccalin® SmPC.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Reduction in the number of infection episodes in the treatment period (12 months) in the Buccalin® group versus the Placebo group.

Secondary endpoints 6

  1. Reduction in the number of infection episodes during 3, 6 and 9 months of treatment will be assessed.
  2. Mean duration in days per RLRTI during the Treatment period and during the Follow up period will be assessed.
  3. Number of antibiotic treatments for a respiratory event during the Treatment period and during the Follow-up period will be assessed.
  4. Number of sick days for patients or caregiver during the Treatment period and during the Follow-up period will be assessed.
  5. During the treatment period the patients were asked to fill in a Visual Analogue Scale (VAS) ranging from 0 (the worse) to 10 (the best situation).
  6. Quantitative and Qualitative Evaluation of Safety in terms of adverse events reported.

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 1

Buccalin Adulti compresse gastroresistenti

PRD305338 · Product

Active substance
Streptococcus Agalactiae
Pharmaceutical form
GASTRO-RESISTANT TABLET
Route of administration
ORAL USE
Max daily dose
31.5 billion organisms billion organisms
Max total dose
378 billion organisms billion organisms
Max treatment duration
12 Month(s)
Authorisation status
Authorised
ATC code
J07AX — OTHER BACTERIAL VACCINES
Marketing authorisation
022928028
MA holder
LABORATORIO FARMACEUTICO S.I.T. S.R.L.
MA country
Italy
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Placebo 1

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Laboratorio Farmaceutico S.I.T. - Specialita' Igienico Terapeutiche S.r.l.

Sponsor organisation
Laboratorio Farmaceutico S.I.T. - Specialita' Igienico Terapeutiche S.r.l.
Address
Via Camillo Benso Conte Di Cavour 70
City
Mede
Postcode
27035
Country
Italy

Scientific contact point

Organisation
Laboratorio Farmaceutico S.I.T. - Specialita' Igienico Terapeutiche S.r.l.
Contact name
Silvana Lonetti

Public contact point

Organisation
Laboratorio Farmaceutico S.I.T. - Specialita' Igienico Terapeutiche S.r.l.
Contact name
Silvana Lonetti

Third parties 1

OrganisationCity, countryDuties
Crolife S.r.l.
ORG-100045520
Milan, Italy On site monitoring, Code 10, Code 11, Code 12, Code 13, Code 2, Code 5, Data management, E-data capture

Locations

1 EU/EEA country · 9 investigational sites

By country

CountryMS statusPlanned subjectsSites
Italy Ongoing, recruiting 216 9
Rest of world
North Macedonia
24

Investigational sites

Italy

9 sites · Ongoing, recruiting
ASST Fatebenefratelli Sacco
Respiratory Diseases Divsion, Via Giovanni Battista Grassi 74, 20157, Milan
Azienda Ospedaliero-Universitaria Policlinico G. Rodolico-San Marco Di Catania
UOC Pneuomology, Via Santa Sofia 78, 95123, Catania
Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico
Respiratory Unit and Cystic Fibrosis Center, Via Francesco Sforza 28, 20122, Milan
ASST Grande Ospedale Metropolitano Niguarda
SC Pneumology, Viale Zara 81, 20159, Milan
Azienda Ospedaliero-Universitaria Ss.Antonio E Biagio E C.Arrigo Alessandria
SC Respiratory Tract Diseases, Via Venezia 16, 15121, Alexandria
Azienda Ospedaliero Universitaria Di Sassari
SC Pneumological and Interventional Clinic, Viale San Pietro 10, 07100, Sassari
Humanitas Mirasole S.p.A.
Biomedical Sciences, Via Alessandro Manzoni 56, 20089, Rozzano
Azienda Socio Sanitaria Territoriale Santi Paolo E Carlo
Respiratory Unit, Via Antonio Di Rudini' 8, 20142, Milan
Azienda Ospedaliera Policlinico Universitario Tor Vergata
Experimental Medicine, Viale Oxford 81, 00133, Rome

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Italy 2025-08-06 2025-10-21

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 13 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol 2024-512937-34-00_redacted 3
Recruitment arrangements (for publication) K1_Recruitment Arrangements 1
Subject information and informed consent form (for publication) L1_SIS and ICF Adults 3
Subject information and informed consent form (for publication) L1_SIS and ICF Adults_treatment period 1
Subject information and informed consent form (for publication) L2_ Other subject information material_Information Leaflet Adults 1
Subject information and informed consent form (for publication) L2_Other subject information material_GP letter 1
Subject information and informed consent form (for publication) L2_Other subject information material_Privacy notice 1
Subject information and informed consent form (for publication) L2_Other subject information_Patient Compliance Diary 1
Subject information and informed consent form (for publication) L2_Other subject information_Patient Questionnaire 2
Subject information and informed consent form (for publication) L2_Other subject information_VAS Scale 1
Summary of Product Characteristics (SmPC) (for publication) G2_SmPC Buccalin 1
Synopsis of the protocol (for publication) D1_Protocol synopsis_ENG 2024-512937-34-00 3
Synopsis of the protocol (for publication) D1_Protocol synopsis_ITA 2024-512937-34-00 3

Application history

3 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2024-07-10 Italy Acceptable
2024-10-16
2024-10-17
2 SUBSTANTIAL MODIFICATION SM-1 2025-03-31 Italy Acceptable
2025-05-19
2025-05-19
3 SUBSTANTIAL MODIFICATION SM-2 2025-07-23 Italy Acceptable 2025-08-06