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Un estudio de fase 3 para evaluar el petosemtamab en comparación con la monoterapia elegida por el investigador en pacientes con carcinoma de células escamosas de cabeza y cuello previamente tratados

29 de octubre de 2026 actualizado por: Genmab

Un estudio controlado aleatorio, abierto de fase 3 para evaluar la eficacia y seguridad de petosemtamab en comparación con el tratamiento de monoterapia elegido por el investigador en pacientes previamente tratados con carcinoma de células escamosas de cabeza y cuello incurable, metastásico o recurrente

This is a phase 3 open-label, randomized, controlled, multicenter study to compare petosemtamab vs investigator's choice monotherapy in HNSCC patients for the second- and third-line treatment of incurable metastatic/recurrent disease.

Descripción general del estudio

Descripción detallada

This is a phase 3 open-label, randomized, controlled, multicenter study to compare petosemtamab vs investigator's choice monotherapy in HNSCC patients for the second- and third-line treatment of incurable metastatic/recurrent disease. HNSCC patients must have progressive disease (PD) on or after anti-PD-1 therapy and platinum-containing therapy. Patients treated with platinum-containing therapy only in the adjuvant setting, or in the context of multimodal therapy for locally advanced disease, should have PD within 6 months of the last dose of platinum-containing therapy.

Tipo de estudio

Intervencionista

Inscripción (Actual)

621

Fase

  • Fase 3

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

      • Berlin, Alemania, 12203
        • Site 121
      • Dresden, Alemania, 01307
        • Site 210
      • Essen, Alemania, 45147
        • Site 165
      • Giessen, Alemania, 35390
        • Site 84
      • Greifswald, Alemania, 17475
        • Site 62
      • Hanover, Alemania, 30625
        • Site 112
      • Leipzig, Alemania, 04103
        • Site 116
      • München, Alemania, 81675
        • Site 168
      • Würzburg, Alemania, 97080
        • Site 99
      • Caba, Argentina, C1280AEB
        • Site 58
      • Córdoba, Argentina, X5008HHW
        • Site 45
      • Rosario, Argentina, S2000KZE
        • Site 110
      • Viedma, Argentina, 8500
        • Site 57
      • Darlinghurst, Australia, 2010
        • Site 3
      • Herston, Australia, 4060
        • Site 170
      • Melbourne, Australia, 3000
        • Site 38
      • Nedlands, Australia, 6009
        • Site 30
      • Saint Leonards, Australia, 2065
        • Site 11
      • Sydney, Australia, 2050
        • Site 73
      • Brasília, Brasil, 70390-140
        • Site 154
      • Porto Alegre, Brasil, 90110-270
        • Site 145
      • Porto Alegre, Brasil, 90610-000
        • Site 150
      • Recife, Brasil, 50040-000
        • Site 146
      • Rio de Janeiro, Brasil, 22281-100
        • Site 148
      • São Paulo, Brasil, 01509-900
        • Site 147
      • São Paulo, Brasil, 04538-132
        • Site 144
      • Brussels, Bélgica, 1200
        • Site 56
      • Ghent, Bélgica, 9000
        • Site 92
      • Leuven, Bélgica, 3000
        • Site 72
      • Liège, Bélgica, 4000
        • Site 108
      • Namur, Bélgica, 5000
        • Site 69
      • Montreal, Canadá, H2X 0A9
        • Site 172
      • Toronto, Canadá, M4N 3M5
        • Site 196
      • Olomouc, Chequia, 779 00
        • Site 201
      • Providencia, Chile, 7500859
        • Site 16
      • Recoleta, Chile, 8420000
        • Site 20
      • Santiago, Chile, 7500921
        • Site 27
      • Santiago, Chile, 7560908
        • Site 21
      • Busan, Corea del Sur, 48108
        • Site 161
      • Goyang-si, Corea del Sur, 10408
        • Site 13
      • Hwasun, Corea del Sur, 58128
        • Site 29
      • Seoul, Corea del Sur, 03080
        • Site 137
      • Seoul, Corea del Sur, 05505
        • Site 36
      • Seoul, Corea del Sur, 06351
        • Site 47
      • Soeul, Corea del Sur, 03722
        • Site 33
      • Suwon, Corea del Sur, 16499
        • Site 164
      • Barcelona, España, 08035
        • Site 78
      • Madrid, España, 28040
        • Site 109
      • Madrid, España, 28040
        • Site 75
      • Madrid, España, 28041
        • Site 71
      • Madrid, España, 28050
        • Site 166
      • Pamplona, España, 31008
        • Site 63
      • Pamplona, España, 31008
        • Site 64
      • Valencia, España, 46009
        • Site 74
    • Alabama
      • Mobile, Alabama, Estados Unidos, 36608
        • Site 160
    • Arizona
      • Prescott, Arizona, Estados Unidos, 86301
        • Site 102
      • Scottsdale, Arizona, Estados Unidos, 85054
        • Site 125
    • California
      • Duarte, California, Estados Unidos, 91010
        • Site 82
      • La Jolla, California, Estados Unidos, 92037
        • Site 25
      • Orange, California, Estados Unidos, 92868
        • Site 173
      • Palo Alto, California, Estados Unidos, 94304
        • Site 28
      • Sacramento, California, Estados Unidos, 95817
        • Site 127
      • San Francisco, California, Estados Unidos, 94158
        • Site 46
    • Colorado
      • Lone Tree, Colorado, Estados Unidos, 80124
        • Site 130
    • District of Columbia
      • Washington D.C., District of Columbia, Estados Unidos, 20010
        • Site 104
    • Florida
      • Fort Myers, Florida, Estados Unidos, 33901
        • Site 12
      • Jacksonville, Florida, Estados Unidos, 32224
        • Site 123
      • Orlando, Florida, Estados Unidos, 32827
        • Site 9
      • Tampa, Florida, Estados Unidos, 33612
        • Site 138
    • Georgia
      • Atlanta, Georgia, Estados Unidos, 30322
        • Site 187
    • Illinois
      • Chicago, Illinois, Estados Unidos, 60607
        • Site 152
      • Chicago, Illinois, Estados Unidos, 60611
        • Site 213
      • Chicago, Illinois, Estados Unidos, 60637
        • Site 68
    • Indiana
      • Indianapolis, Indiana, Estados Unidos, 46202
        • Site 31
    • Kentucky
      • Louisville, Kentucky, Estados Unidos, 40202
        • Site 8
    • Louisiana
      • Baton Rouge, Louisiana, Estados Unidos, 70809
        • Site 40
      • New Orleans, Louisiana, Estados Unidos, 70121
        • Site 100
    • Maryland
      • Columbia, Maryland, Estados Unidos, 21044
        • Site 153
    • Massachusetts
      • Boston, Massachusetts, Estados Unidos, 02215
        • Site 77
    • Michigan
      • Ann Arbor, Michigan, Estados Unidos, 48109
        • Site 103
      • Detroit, Michigan, Estados Unidos, 48201
        • Site 5
    • Minnesota
      • Maple Grove, Minnesota, Estados Unidos, 55369
        • Site 49
      • Rochester, Minnesota, Estados Unidos, 55905
        • Site 124
    • Missouri
      • St Louis, Missouri, Estados Unidos, 63110
        • Site 18
    • New Jersey
      • Hackensack, New Jersey, Estados Unidos, 07601
        • Site 86
    • New Mexico
      • Albuquerque, New Mexico, Estados Unidos, 87131
        • Site 15
    • New York
      • New York, New York, Estados Unidos, 10029
        • Site 24
      • The Bronx, New York, Estados Unidos, 10461
        • Site 214
    • North Carolina
      • Chapel Hill, North Carolina, Estados Unidos, 27514
        • Site 98
      • Durham, North Carolina, Estados Unidos, 27710
        • Site 122
    • Ohio
      • Cincinnati, Ohio, Estados Unidos, 45219
        • Site 23
      • Cleveland, Ohio, Estados Unidos, 44106
        • Site 218
      • Cleveland, Ohio, Estados Unidos, 44195
        • Site 87
      • Columbus, Ohio, Estados Unidos, 43210
        • Site 32
    • Oregon
      • Portland, Oregon, Estados Unidos, 97213
        • Site 26
    • Pennsylvania
      • Bensalem, Pennsylvania, Estados Unidos, 19020
        • Site 151
      • Philadelphia, Pennsylvania, Estados Unidos, 19107
        • Site 158
    • South Carolina
      • Charleston, South Carolina, Estados Unidos, 29425
        • Site 50
    • Tennessee
      • Chattanooga, Tennessee, Estados Unidos, 37404
        • Site 60
      • Memphis, Tennessee, Estados Unidos, 38103
        • Site 54
      • Nashville, Tennessee, Estados Unidos, 37203
        • Site 59
      • Nashville, Tennessee, Estados Unidos, 37232
        • Site 67
    • Texas
      • Denison, Texas, Estados Unidos, 75020
        • Site 55
      • El Paso, Texas, Estados Unidos, 79915
        • Site 34
      • Houston, Texas, Estados Unidos, 77030
        • Site 51
      • Houston, Texas, Estados Unidos, 77030
        • Site 7
      • Pearland, Texas, Estados Unidos, 77584
        • Site 94
    • Utah
      • Salt Lake City, Utah, Estados Unidos, 84112
        • Site 4
    • Virginia
      • Blacksburg, Virginia, Estados Unidos, 24060
        • Site 10
      • Charlottesville, Virginia, Estados Unidos, 22908
        • Site 22
      • Winchester, Virginia, Estados Unidos, 22601
        • Site 156
    • Washington
      • Seattle, Washington, Estados Unidos, 98109
        • Site 163
      • Spokane, Washington, Estados Unidos, 99202
        • Site 6
    • Wisconsin
      • Madison, Wisconsin, Estados Unidos, 53705
        • Site 216
      • Bordeaux, Francia, 33075
        • Site 105
      • Brest, Francia, 29200
        • Site 211
      • Le Mans, Francia, 72000
        • Site 162
      • Lille, Francia, 59000
        • Site 149
      • Lyon, Francia, 69373
        • Site 118
      • Marseille, Francia, 13005
        • Site 115
      • Montpellier, Francia, 34298
        • Site 106
      • Nice, Francia, 06189
        • Site 169
      • Paris, Francia, 75005
        • Site 114
      • Paris, Francia, 75013
        • Site 167
      • Poitiers, Francia, 86000
        • Site 136
      • Rennes, Francia, 35042
        • Site 141
      • Rouen, Francia, 76038
        • Site 107
      • Toulouse, Francia, 31059
        • Site 119
      • Vandœuvre-lès-Nancy, Francia, 54519
        • Site 142
      • Villejuif, Francia, 94800
        • Site 113
      • Athens, Grecia, 124 62
        • Site 91
      • Heraklion, Grecia, 71500
        • Site 120
      • Thessaloniki, Grecia, 55236
        • Site 83
      • Nyíregyháza, Hungría, 4400
        • Site 204
      • Pécs, Hungría, 7624
        • Site 195
      • Szeged, Hungría, 6725
        • Site 198
      • Haifa, Israel, 3109601
        • Site 19
      • Jerusalem, Israel, 9112001
        • Site 1
      • Ramat Gan, Israel, 5265601
        • Site 14
      • Tel Aviv, Israel, 6423906
        • Site 2
      • Brescia, Italia, 25123
        • Site 93
      • Cuneo, Italia, 12100
        • Site 111
      • Milan, Italia, 20133
        • Site 128
      • Milan, Italia, 20141
        • Site 81
      • Naples, Italia, 80131
        • Site 209
      • Naples, Italia, 80131
        • Site 89
      • Roma, Italia, 00161
        • Site 203
      • Rozzano, Italia, 20089
        • Site 85
      • Chūōku, Japón, 104-0045
        • Site 132
      • Fukuoka, Japón, 812-8582
        • Site 192
      • Kashiwa, Japón, 277-8577
        • Site 131
      • Miki, Japón, 761-0793
        • Site 135
      • Nagoya, Japón, 464-8681
        • Site 139
      • Natori, Japón, 981-1293
        • Site 186
      • Sendai, Japón, 980-8574
        • Site 134
      • Ōsaka-sayama, Japón, 589-8511
        • Site 133
      • Kaunas, Lituania, 50161
        • Site 180
      • Vilnius, Lituania, 08406
        • Site 181
      • Amsterdam, Países Bajos, 1066 CX
        • Site 76
      • Nijmegen, Países Bajos, 6525 GA
        • Site 61
      • Utrecht, Países Bajos, 3584 CX
        • Site 66
      • Bydgoszcz, Polonia, 85-796
        • Site 190
      • Gdansk, Polonia, 80-214
        • Site 143
      • Gliwice, Polonia, 44-102
        • Site 97
      • Krakow, Polonia, 31-826
        • Site 177
      • Lodz, Polonia, 93-513
        • Site 200
      • Poznan, Polonia, 60-185
        • Site 117
      • Warsaw, Polonia, 02-781
        • Site 179
      • Coimbra, Portugal, 3004-561
        • Site 182
      • Lisbon, Portugal, 1998-018
        • Site 183
      • Porto, Portugal, 4200-072
        • Site 185
      • Cambridge, Reino Unido, CB2 0QQ
        • Site 65
      • Cardiff, Reino Unido, CF14 2TL
        • Site 174
      • Glasgow, Reino Unido, G12 0YN
        • Site 171
      • Liverpool, Reino Unido, L7 8YA
        • Site 44
      • London, Reino Unido, E20 1JQ
        • Site 157
      • London, Reino Unido, EC1A 7BE
        • Site 140
      • London, Reino Unido, SE1 9RT
        • Site 90
      • London, Reino Unido, SW3 6JJ
        • Site 42
      • Manchester, Reino Unido, M20 4BX
        • Site 48
      • Middlesex, Reino Unido, HA6 2RN
        • Site 70
      • Newcastle upon Tyne, Reino Unido, NE7 7DN
        • Site 191
      • Sutton, Reino Unido, SM2 5PT
        • Site 43
      • Bellinzona, Suiza, CH-6500
        • Site 184
      • Geneva, Suiza, 1211
        • Site 189
      • Lausanne, Suiza, 1011
        • Site 194
      • Sankt Gallen, Suiza, 9007
        • Site 178
      • Kaohsiung City, Taiwán, 807
        • Site 17
      • Kaohsiung City, Taiwán, 833
        • Site 95
      • Taichung, Taiwán, 40447
        • Site 53
      • Tainan, Taiwán, 70428
        • Site 176
      • Taipei, Taiwán, 112
        • Site 35
      • Taoyuan City, Taiwán, 333
        • Site 52

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Signed ICF before initiation of any study procedures.
  • Age ≥ 18 years at signing of ICF.
  • Histologically previously confirmed HNSCC with evidence of metastatic or locally advanced disease not amenable to standard therapy with curative intent.
  • HNSCC participants progressed on or after anti-PD-1 therapy and platinum-containing therapy.
  • The eligible HNSCC primary tumor locations are oropharynx, oral cavity, hypopharynx, and larynx.
  • A baseline new tumor sample unless the participant has an available tumor sample as an FFPE block with sufficient material.
  • Measurable disease as defined by RECIST v1.1 by radiologic methods.
  • ECOG PS of 0 or 1
  • Life expectancy ≥ 12 weeks, as per investigator
  • Adequate organ function (as per protocol)

Exclusion Criteria:

  • Central nervous system metastases that are untreated or symptomatic, or require radiation, surgery, or continued steroid therapy to control symptoms within 14 days prior to randomization.
  • Known leptomeningeal involvement
  • Any systemic anticancer therapy within 4 weeks prior to randomization.
  • Major surgery within 3 weeks or palliative radiotherapy within 2 weeks prior to randomization.
  • Persistent Grade >1 clinically significant toxicities related to prior antineoplastic therapies
  • History of hypersensitivity reaction to any of the excipients of treatment required for this study.
  • Unstable angina; history of congestive heart failure of Class II-IV New York Heart Association (NYHA) criteria, or serious cardiac arrhythmia requiring treatment or history of myocardial infarction within 6 months of study entry
  • History of prior malignancies with the exception of localized cancer with curative resection (e.g. cervical intraepithelial neoplasia or nonmelanoma skin cancer)
  • Current dyspnea at rest of any origin, or other diseases requiring continuous oxygen therapy
  • Current serious illness or medical conditions including, but not limited to, uncontrolled active infection, clinically significant pulmonary, metabolic or psychiatric disorders
  • Participants with known infectious diseases (as per protocol)
  • Pregnant or breastfeeding participants

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador activo: Elección del investigador

Cetuximab

Methotrexate

Docetaxel

Experimental: MCLA-158

MCLA-158

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Overall Survival (OS)
Periodo de tiempo: Up to approximately 3 years

OS was defined as the time from randomization to death due to any cause.

Up to approximately 3 years

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Objective Response Rate (ORR) as Assessed by Blinded Independent Central Review
Periodo de tiempo: Up to approximately 2 years

ORR was defined as the proportion of participants in the analysis population who had a Complete Response or Partial Response based per RECIST v1.1 with confirmation.

Up to approximately 2 years
Progression Free Survival (PFS) as Assessed by Blinded Independent Central Review
Periodo de tiempo: Up to approximately 2 years

PFS was defined as the time from randomization to the first documented disease progression per RECIST v1.1 or death due to any cause.

Up to approximately 2 years
Duration of Response (DOR) as Assessed by Blinded Independent Central Review
Periodo de tiempo: Up to approximately 2 years

For participants with a confirmed CR or PR per RECIST v1.1, DOR was defined as the time from the date of first documented response of CR or PR per RECIST v1.1 to the date of first documented progression or death due to underlying cancer.

Up to approximately 2 years
Objective Response Rate (ORR) as Assessed by Investigator Review
Periodo de tiempo: Up to approximately 2 years

ORR was defined as the proportion of participants in the analysis population who had a Complete Response or Partial Response based per RECIST v1.1 with confirmation.

Up to approximately 2 years
Progression Free Survival (PFS) as Assessed by Investigator Review
Periodo de tiempo: Up to approximately 2 years

PFS was defined as the time from randomization to the first documented disease progression per RECIST v1.1 or death due to any cause.

Up to approximately 2 years
Duration of Response (DOR) as Assessed by Investigator Review
Periodo de tiempo: Up to approximately 2 years

For participants with a confirmed CR or PR per RECIST v1.1, DOR was defined as the time from the date of the first documented response of CR or PR per RECIST v1.1 to the date of first documented progression or death due to underlying cancer.

Up to approximately 2 years
Time to Response (TTR) as Assessed by Blinded Independent Central Review
Periodo de tiempo: Up to approximately 2 years

For participants with a confirmed CR or PR per RECIST v1.1, TTR was defined as the time from randomization to the first documented response per RECIST v1.1.

Up to approximately 2 years
Time to Response (TTR) as Assessed by Investigator Review
Periodo de tiempo: Up to approximately 2 years

For participants with a confirmed CR or PR per RECIST v1.1, TTR was defined as the time from randomization to the first documented response per RECIST v1.1.

Up to approximately 2 years
Clinical Benefit Rate (CBR) as Assessed by Blinded Independent Central Review
Periodo de tiempo: Up to approximately 2 years

CBR was defined as the proportion of participants with a confirmed CR or PR, or SD lasting 16 weeks for longer per RECIST v1.1

Up to approximately 2 years
Clinical Benefit Rate (CBR) as Assessed by Investigator Review
Periodo de tiempo: Up to approximately 2 years

CBR was defined as the proportion of participants with a confirmed CR or PR, or SD lasting 16 weeks for longer per RECIST v1.1

Up to approximately 2 years
Number of Participants who Experienced At Least One Treatment Emergent Adverse Event (TEAE)
Periodo de tiempo: Up to 30 days post-last dose

An AE means any untoward medical occurrence associated with use of a drug in humans, whether or not considered drug related. The term TEAE covers any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation after the first treatment administration in the clinical study. The number of all participants who experienced at least one TEAE is presented.

Up to 30 days post-last dose
Number of Participants who Experienced At Least One Serious TEAE
Periodo de tiempo: Up to 30 days post-last dose

An AE means any untoward medical occurrence associated with use of a drug in humans, whether or not considered drug related. The term TEAE covers any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation after the first treatment administration in the clinical study. The number of all participants who experienced at least one serious TEAE is presented.

Up to 30 days post-last dose
Number of Participants who Discontinued Study Treatment Due to TEAEs
Periodo de tiempo: Up to 30 days post-last dose

An AE means any untoward medical occurrence associated with use of a drug in humans, whether or not considered drug related. The term TEAE covers any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation after the first treatment administration in the clinical study. The number of all participants who discontinued study treatment due to TEAEs is presented.

Up to 30 days post-last dose
Number of Participants who had Dose Modification Due to TEAEs
Periodo de tiempo: Up to 30 days post-last dose

An AE means any untoward medical occurrence associated with use of a drug in humans, whether or not considered drug related. The term TEAE covers any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation after the first treatment administration in the clinical study. The number of all participants who had dose modification due to TEAEs is presented.

Up to 30 days post-last dose
Pharmacokinetic parameters
Periodo de tiempo: Up to first 6 cycles

Clearance of plasma and central volume of distribution based on population PK model

Up to first 6 cycles

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Investigadores

  • Director de estudio: Study Official, Genmab

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

25 de junio de 2024

Finalización primaria (Estimado)

1 de febrero de 2028

Finalización del estudio (Estimado)

1 de marzo de 2029

Fechas de registro del estudio

Enviado por primera vez

3 de julio de 2024

Primero enviado que cumplió con los criterios de control de calidad

3 de julio de 2024

Publicado por primera vez (Actual)

11 de julio de 2024

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

2 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

29 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Otros números de identificación del estudio

  • MCLA-158-CL02
  • 2023-510322-32-00 (Ctis)
  • 2023 (Subvención/contrato del NIH de EE. UU.)

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Sí

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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