- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT04801420
Étude de phase 2 de VLA15, un vaccin candidat contre la borréliose de Lyme, dans une population pédiatrique et adulte en bonne santé
Étude d'innocuité et d'immunogénicité de VLA15, un candidat-vaccin multivalent recombinant à base d'OspA contre la borréliose de Lyme : une étude de phase 2 randomisée, contrôlée et à l'aveugle des observateurs dans une population d'étude pédiatrique et adulte en bonne santé
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Type d'étude
Inscription (Réel)
Phase
- Phase 2
Contacts et emplacements
Lieux d'étude
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Connecticut
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Bridgeport, Connecticut, États-Unis, 06606
- New England Research Associates
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Stamford, Connecticut, États-Unis, 06905
- Stamford Therapeutics Consortium
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Waterbury, Connecticut, États-Unis, 06708
- Chase Medical Research, LLC
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Waterbury, Connecticut, États-Unis, 06708
- Pediatric Associates of Conn. PC
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Minnesota
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Minneapolis, Minnesota, États-Unis, 55402
- Clinical Research Institute, Inc.
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New Jersey
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East Orange, New Jersey, États-Unis, 07018
- Foundation Pediatrics
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Irvington, New Jersey, États-Unis, 07111
- Med Clinical Research Partners, LLC
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New York
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Binghamton, New York, États-Unis, 13905
- Meridian Clinical Research LLC
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Rochester, New York, États-Unis, 14609
- Rochester Clinical Research, Inc.
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Staten Island, New York, États-Unis, 10314
- Richmond Behavioral Associates
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The Bronx, New York, États-Unis, 10467
- Advantage Clinical Trials
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Ohio
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Cleveland, Ohio, États-Unis, 44122
- Velocity Clinical Research, Inc.
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Pennsylvania
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Erie, Pennsylvania, États-Unis, 16506
- Allegheny Health and Wellness Pavilion
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Erie, Pennsylvania, États-Unis, 16508
- Liberty Family Practice
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Fort Washington, Pennsylvania, États-Unis, 19034
- Lockman & Lubell Pediatric Associates
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Rhode Island
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Providence, Rhode Island, États-Unis, 02906
- The Miriam Hospital
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Providence, Rhode Island, États-Unis, 02903
- Rhode Island Hospital
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Providence, Rhode Island, États-Unis, 02903
- Hasbro Children's Hospital
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Warwick, Rhode Island, États-Unis, 02886
- Velocity Clinical Research Providence
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
La description
Critère d'intégration:
- Le sujet est âgé de 5 à 65 ans au jour du dépistage (Visite 0)
- Le sujet est en bonne santé générale
Le(s) parent(s)/représentant(s) légal(aux) et le sujet comprennent l'étude et ses procédures, acceptent ses dispositions
- pour les sujets âgés de 18 à 65 ans : consentement éclairé écrit avant toute procédure liée à l'étude
- pour les sujets âgés de 5 à 17 ans : consentement éclairé écrit du ou des représentants légaux du sujet, conformément aux exigences locales, et consentement éclairé écrit du sujet, le cas échéant, avant toute procédure liée à l'étude.
Si le sujet est en âge de procréer : le sujet a un test de grossesse sérique négatif lors du dépistage (visite 0) et accepte d'utiliser des mesures de contrôle des naissances adéquates selon les délais suivants :
- Phase d'étude principale : durée de l'étude complète
- Phase de rappel : jusqu'au mois 23 (c'est-à-dire 5 mois après la dose de rappel)
- Le sujet est disposé et capable de se conformer aux visites prévues, au plan de traitement et aux autres procédures d'étude
- Le sujet est disponible pendant toute la durée de l'étude et peut être contacté par téléphone pendant la participation à l'étude
Critère d'exclusion:
- Le sujet a une maladie chronique liée à la borréliose de Lyme (LB), une LB symptomatique active, ou a reçu un traitement pour la LB au cours des 3 derniers mois précédant le jour 1 ;
- Le sujet a déjà reçu une vaccination contre LB ;
- Le sujet a eu une morsure de tique dans les 4 semaines précédant le jour 1 ;
- Le sujet a des antécédents médicaux ou a actuellement une maladie cliniquement pertinente ;
- Le sujet a des antécédents médicaux ou a actuellement une maladie neuro-inflammatoire ou auto-immune ;
- Le sujet a une thrombocytopénie connue, un trouble de la coagulation ou a reçu des anticoagulants dans les 3 semaines précédant le jour 1 ;
- Le sujet a reçu une immunisation active ou passive dans les 4 semaines précédant le jour 1 ;
- Le sujet a reçu tout autre médicament enregistré ou non enregistré dans un autre essai clinique dans les 4 semaines précédant la vaccination au jour 1 ;
- Le sujet a un défaut connu ou suspecté du système immunitaire ou a reçu un traitement immunosuppresseur dans les 4 semaines précédant le jour 1 ;
- Le sujet a des antécédents d'anaphylaxie de cause inconnue ou de réactions allergiques graves de cause inconnue ou a une hypersensibilité connue ou des réactions allergiques à l'un des composants du vaccin ;
- Le sujet a eu une tumeur maligne au cours des 5 dernières années ;
- Le sujet est enceinte, a l'intention de devenir enceinte au cours de l'étude ou allaite au moment de l'inscription ;
- Le sujet a donné ou prévoit de donner du sang ou des produits dérivés du sang 4 semaines avant le jour 1 ;
- Le sujet a une condition qui pourrait compromettre son bien-être, pourrait interférer avec l'évaluation des critères d'évaluation de l'étude ou limiterait la capacité du sujet à terminer l'étude ;
- Le sujet est dans une relation de dépendance ;
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Quadruple
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Expérimental: Partie A+B - Groupe 1
Partie A : VLA15 aux mois 0, 2 et 6 Partie B : VLA15 aux mois 18, 30 et 42
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un candidat-vaccin multivalent recombinant basé sur la protéine de surface externe A (OspA)
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Expérimental: Partie A+B - Groupe 2
Partie A : VLA15 aux mois 0 et 6, placebo au mois 2 Partie B : VLA15 aux mois 18, 30 et 42
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un candidat-vaccin multivalent recombinant basé sur la protéine de surface externe A (OspA)
PBS (solution saline tamponnée au phosphate)
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Comparateur placebo: Partie A+B - Groupe 3
Partie A : Placebo aux mois 0, 2 et 6 Partie B : Placebo aux mois 18, 30 et 42
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PBS (solution saline tamponnée au phosphate)
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Percentage of Participants With Solicited Local and Solicited Systemic Adverse Events (AEs) Within 7 Days After Vaccination 1
Délai: From Day 1 to Day 7 after vaccination 1 at Month 0
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness meeting grading scale (MGS), swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 1 at Month 0
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Vaccination 2
Délai: From Day 1 to Day 7 after vaccination 2 at Month 2
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 2 at Month 2
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Vaccination 3
Délai: From Day 1 to Day 7 after vaccination 3 at Month 6
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 3 at Month 6
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Any Vaccination During the Main Study Phase
Délai: From Day 1 to Day 7 after any vaccination 1, 2 or 3 at Month 0, 2 and 6, respectively
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after any vaccination 1, 2 or 3 at Month 0, 2 and 6, respectively
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Geometric Mean Titers (GMTs) for Immunoglobulin G (IgG) Against Each Outer Surface Protein A (OspA) Serotype (ST1 to ST6) at Day 208 During the Main Study Phase
Délai: At Day 208 (Month 7)
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GMTs for IgG against each OspA serotype ST1 to ST6, determined by an IgG binding assay at Day 208 was presented in this outcome measure.
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At Day 208 (Month 7)
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Vaccination 1 Booster Dose
Délai: From Day 1 to Day 7 after vaccination 1 booster dose at Month 18
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 1 booster dose at Month 18
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Vaccination 2 Booster Dose
Délai: From Day 1 to Day 7 after vaccination 2 booster dose at Month 30
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 2 booster dose at Month 30
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Percentage of Participants With Solicited Local and Solicited Systemic AEs Within 7 Days After Vaccination 3 Booster Dose
Délai: From Day 1 to Day 7 after vaccination 3 booster dose at Month 42
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Participants or their legal guardians were required to record any solicited local and systemic AEs in the electronic diary.
Solicited symptoms were pre-defined symptoms which were collected via an electronic diary.
Solicited local AEs included pain, tenderness, erythema/redness MGS, swelling MGS and induration/hardening MGS.
Solicited systemic AEs included headache, muscle pain, joint pain, nausea, vomiting, fatigue and fever.
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From Day 1 to Day 7 after vaccination 3 booster dose at Month 42
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Percentage of Participants With Serious Adverse Events (SAEs)
Délai: From Day 1 of vaccination 1 up to 6 months following the last booster dose (up to Month 48)
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A SAE was any untoward medical occurrence that at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect; was another medically important condition.
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From Day 1 of vaccination 1 up to 6 months following the last booster dose (up to Month 48)
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Percentage of Participants With Adverse Events of Special Interest (AESIs)
Délai: From Day 1 of vaccination 1 up to 6 months following the last booster dose (up to Month 48)
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An AESI (serious or non-serious) was one of scientific and medical concern specific to the sponsor's product or program, for which ongoing monitoring and rapid communication by the investigator to the sponsor were appropriate.
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From Day 1 of vaccination 1 up to 6 months following the last booster dose (up to Month 48)
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Percentage of Participants With Unsolicited AE
Délai: Up to 28 Days after vaccination 1, 2 or 3 at Month 0, 2 and 6, respectively, and up to 28 Days after vaccination 1, 2 or 3 booster dose at Month 18, 30 and 42, respectively
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An AE was any untoward medical occurrence in a participant administered an investigational product, whether or not related to this treatment.
Unsolicited AEs were defined as any solicited local or systemic AE if it had an onset date more than 6 days after vaccination or any other symptom or untoward medical event.
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Up to 28 Days after vaccination 1, 2 or 3 at Month 0, 2 and 6, respectively, and up to 28 Days after vaccination 1, 2 or 3 booster dose at Month 18, 30 and 42, respectively
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Percentage of Participants With SAEs, AESIs, Solicited and Unsolicited AEs Stratified by Age Group
Délai: SAEs & AESIs: From Day 1 of vaccination up to Month 48; Solicited AEs: from Day 1 to Day 7 after vaccination 1, 2, 3, 4, 5 and 6; Unsolicited AEs: up to 28 Days after vaccination 1, 2, 3, 4, 5 and 6
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Percentage of participants with SAEs, AESIs, solicited and unsolicited AEs stratified by age group 5-11, 12-17 and 18-65 years were reported.
SAE: any untoward medical occurrence that at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect; was another medically important condition.
AESI: scientific and medical concern specific to the sponsor's product or program.
Solicited AE: predefined reactions at injection site or systemic reactions after each vaccination.
Unsolicited AEs: any solicited local or systemic AE if it had an onset date more than 6 days after vaccination or any other symptom or untoward medical event.
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SAEs & AESIs: From Day 1 of vaccination up to Month 48; Solicited AEs: from Day 1 to Day 7 after vaccination 1, 2, 3, 4, 5 and 6; Unsolicited AEs: up to 28 Days after vaccination 1, 2, 3, 4, 5 and 6
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GMTs for IgG Against Each OspA Serotype (ST1 to ST6) at Baseline, Days 85, 180, 365 and Month 18
Délai: Baseline; Days 85, 180 and 365; Month 18
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GMTs for IgG against each OspA serotype ST1 to ST6, determined by an IgG binding assay were evaluated.
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Baseline; Days 85, 180 and 365; Month 18
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Seroconversion Rate (SCR) at Days 85, 180, 208, 365 and Month 18
Délai: Days 85, 180, 208 and 365; Month 18
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Seroconversion for enzyme linked immunosorbent assay (ELISA) was defined as a change from seronegative at baseline to seropositive at a measured time point.
For participants who were OspA seropositive at baseline, seroconversion was defined as a greater than or equal to (>=) 4-fold rise in IgG antibody titer from baseline.
SCR was percentage of participants with seroconversion reported for each OspA serotype specific IgG ST1 to ST6, as determined by ELISA.
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Days 85, 180, 208 and 365; Month 18
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Geometric Mean of the Fold Rise (GMFR) for IgG When Compared to Baseline Against Each OspA Serotype (ST1 to ST6) at Days 85 and 208
Délai: Days 85 and 208
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GMFR for IgG when compared to baseline against each OspA serotype ST1 to ST6, determined by IgG binding assay at Day 85 and Day 208 were evaluated.
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Days 85 and 208
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GMTs for IgG Against Each OspA Serotype (ST1 to ST6) Stratified by Age Group at Baseline, Days 85, 180, 194, 365 and Month 18
Délai: Baseline; Days 85, 180, 194 (18 to 65 years only) and 365; Month 18
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GMTs for IgG against each OspA serotype ST1 to ST6, determined by an IgG binding assay stratified by age group (5-11, 12-17 and 18-65 years) were evaluated.
Day 194 data was reported for adult participants only as pre-specified in protocol.
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Baseline; Days 85, 180, 194 (18 to 65 years only) and 365; Month 18
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SCR Stratified by Age Group at Days 85, 180, 194, 208, 365 and Month 18
Délai: Days 85, 180, 194 (18 to 65 years only), 208 and 365; Month 18
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Seroconversion for ELISA was defined as a change from seronegative at baseline to seropositive at a measured time point.
For participants who were OspA seropositive at baseline, seroconversion was defined as a >=4-fold rise in IgG antibody titer from baseline.
SCR was percentage of participants with seroconversion reported for each OspA serotype specific IgG ST1 to ST6, as determined by ELISA.
Day 194 data was reported for adult participants only as pre-specified in protocol.
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Days 85, 180, 194 (18 to 65 years only), 208 and 365; Month 18
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GMFR for IgG When Compared to Baseline Against Each OspA Serotype (ST1 to ST6) Stratified by Age Group at Days 85 and 208
Délai: Days 85 and 208
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GMFR for IgG when compared to baseline against each OspA serotype ST1 to ST6, stratified by age group (5-11, 12-17 and 18-65 years) determined by IgG binding assay at Day 85 and Day 208 were evaluated.
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Days 85 and 208
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GMTs for IgG Against Each OspA Serotype (ST1 to ST6) at Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
Délai: Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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GMTs for IgG against each OspA serotype ST1 to ST6, determined by an IgG binding assay were evaluated.
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Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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SCR at Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
Délai: Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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Seroconversion for ELISA was defined as a change from seronegative at baseline to seropositive at a measured time point.
For participants who were OspA seropositive at baseline, seroconversion was defined as a >=4-fold rise in IgG antibody titer from baseline.
SCR was percentage of participants with seroconversion reported for each OspA serotype specific IgG ST1 to ST6, as determined by ELISA.
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Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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GMFR for IgG Against Each OspA Serotype (ST1 to ST6) at Months 19, 31 and 43 During the Booster Phase
Délai: Months 19, 31 and 43
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GMFRs for IgG were determined by IgG binding assay for each OspA serotype (ST1-ST6) at Months 19, 31, and 43 relative to the corresponding pre-booster timepoints Months 18, 30, and 42, respectively.
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Months 19, 31 and 43
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GMTs for IgG Against Each OspA Serotype (ST1 to ST6) Stratified by Age Group at Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
Délai: Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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GMTs for IgG against each OspA serotype ST1 to ST6, determined by an IgG binding assay stratified by age group (5-11, 12-17 and 18-65 years) were evaluated.
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Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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SCR Stratified by Age Group at Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
Délai: Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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Seroconversion for ELISA was defined as a change from seronegative at baseline to seropositive at a measured time point.
For participants who were OspA seropositive at baseline, seroconversion was defined as a >=4-fold rise in IgG antibody titer from baseline.
SCR was percentage of participants with seroconversion reported for each OspA serotype specific IgG ST1 to ST6, as determined by ELISA.
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Months 18, 19, 23, 26, 30, 31, 39, 42, 43 and 48
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GMFR for IgG Against Each OspA Serotype (ST1 to ST6) Stratified by Age Group at Months 19, 31 and 43 During the Booster Phase
Délai: Months 19, 31 and 43
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GMFRs for IgG were determined by IgG binding assay for each OspA serotype (ST1-ST6), stratified by age group (5-11, 12-17 and 18-65 years) at Months 19, 31, and 43 relative to the corresponding pre-booster timepoints Months 18, 30, and 42, respectively.
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Months 19, 31 and 43
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Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Directeur d'études: Pfizer CT.gov Call Center, Pfizer
Publications et liens utiles
Publications générales
- Wagner L, Obersriebnig M, Kadlecek V, Hochreiter R, Ghadge SK, Larcher-Senn J, Hegele L, Maguire JD, Derhaschnig U, Jaramillo JC, Eder-Lingelbach S, Bezay N. Immunogenicity and safety of different immunisation schedules of the VLA15 Lyme borreliosis vaccine candidate in adults, adolescents, and children: a randomised, observer-blind, placebo-controlled, phase 2 trial. Lancet Infect Dis. 2025 Sep;25(9):986-999. doi: 10.1016/S1473-3099(25)00092-1. Epub 2025 Apr 25.
- Wagner L, Obersriebnig M, Hochreiter R, Kadlecek V, Larcher-Senn J, Hegele L, Maguire JD, Murphy T, Derhaschnig U, Bezay N, Jaramillo JC, Eder-Lingelbach S, Messier M. Immunogenicity and safety of an 18-month booster dose of the VLA15 Lyme borreliosis vaccine candidate after primary immunisation in children, adolescents, and adults in the USA: a randomised, observer-blind, placebo-controlled, phase 2 trial. Lancet Infect Dis. 2026 Mar;26(3):314-328. doi: 10.1016/S1473-3099(25)00541-9. Epub 2025 Nov 7.
- Wagner L, Kadlecek V, Skaroupkova J, Scharnagl N, Hochreiter R, Messier M, Jaramillo JC, Larcher-Steiner J, Hegele L, Lamberth E, Murphy T, Maguire JD, Clarkin C, Derhaschnig U, Eder-Lingelbach S. A second yearly booster dose of the VLA15 Lyme borreliosis vaccine candidate in healthy individuals. Nat Commun. 2026 Aug 4;17(1):9386. doi: 10.1038/s41467-026-75871-3.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- VLA15-221
- C4601008 (Autre identifiant: Alias Study Number)
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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