Esta página foi traduzida automaticamente e a precisão da tradução não é garantida. Por favor, consulte o versão em inglês para um texto fonte.

Extended-release Pregabalin for the Treatment of Neuropathic Pain in Patients With Diabetic Peripheral Neuropathy and Postherpetic Neuralgia (PRISE)

13 de julho de 2026 atualizado por: Brainfarma Industria Química e Farmacêutica S/A

A Phase III, Multicenter, Randomized, Double-blind, Double-dummy, Controlled, Parallel-group, Non-inferiority Clinical Trial to Evaluate the Efficacy and Safety of Extended-release Pregabalin Tablets Compared With Immediate-release Pregabalin Tablets, in the Relief of Neuropathic Pain in Participants With Diabetic Peripheral Neuropathy or Postherpetic Neuralgia.

Extended-release Pregabalin for the Treatment of Neuropathic Pain in Patients With Diabetic Peripheral Neuropathy and Postherpetic Neuralgia

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Tipo de estudo

Intervencional

Inscrição (Estimado)

348

Estágio

  • Fase 3

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Estude backup de contato

Locais de estudo

    • Estado de Bahia
      • Salvador, Estado de Bahia, Brasil, 41680430
        • Recrutamento
        • Cpec Obras Sociais Irmã Dulce
        • Contato:
        • Investigador principal:
          • Edson D. M. Júnior, Epidemiologist
    • Minas Gerais
      • Belo Horizonte, Minas Gerais, Brasil, 30575180
        • Recrutamento
        • Instituto Anima de Extensão Universitária - Unibh
        • Contato:
        • Investigador principal:
          • Dayane R. F. C, Neurology Residency
      • Vespasiano, Minas Gerais, Brasil, 33200664
        • Recrutamento
        • Centro de Ensino Superior de Vespasiano
        • Contato:
        • Investigador principal:
          • Fernanda C Perreiras, General/Surgical Oncologist
    • Rio Grande do Norte
      • Natal, Rio Grande do Norte, Brasil, 59076000
        • Recrutamento
        • Apec Sociedade Potiguar de Educação E Cultura
        • Contato:
        • Investigador principal:
          • Marcos L Freitas, Neurologist
    • Rio de Janeiro
      • Rio de Janeiro, Rio de Janeiro, Brasil, 20231092
        • Recrutamento
        • Instituto Estadual Do Cerebro Paulo Niemeyer
        • Contato:
        • Investigador principal:
          • Luiz E. A. Wildemberg, Endocrinologist
    • Santa Catarina
      • Joinville, Santa Catarina, Brasil, 89202190
        • Recrutamento
        • Clinica Neurologica e Neurocirurgica de Joinville
        • Contato:
        • Investigador principal:
          • Alexandre L Longo, Neurologist
      • Palhoça, Santa Catarina, Brasil, 88137270
        • Recrutamento
        • Instituto Anima de Extensão Universitária - Unisul
        • Contato:
        • Investigador principal:
          • Alexandre C Buffon, Anesthesiologist
    • Sergipe
      • Aracaju, Sergipe, Brasil, 49055480
        • Recrutamento
        • Fundação de Beneficência Hospital de Cirurgia
        • Contato:
        • Investigador principal:
          • Alex V. C. França, Gastroenterologist
      • Aracaju, Sergipe, Brasil, 49072720
        • Recrutamento
        • Associação Aracajuana Hospital Santa Isabel
        • Contato:
        • Investigador principal:
          • Alex V. C. França, Gastroenterologist
      • Aracaju, Sergipe, Brasil, 49075000
        • Recrutamento
        • Newdata Clinical Research
        • Contato:
        • Investigador principal:
          • Alex V. C. França, Gastroenterologist
    • São Paulo
      • Bragança Paulista, São Paulo, Brasil, 12916900
        • Recrutamento
        • Casa de Nossa Senhora Da Paz Ação Social Franciscana
        • Contato:
        • Investigador principal:
          • Rafaella S. D. Beltrame, Intensive care
      • Campinas, São Paulo, Brasil, 1308756
        • Recrutamento
        • Synvia Campinas
        • Contato:
        • Investigador principal:
          • Ana Lígia G. M. Germano, Endocrinologist
      • Campinas, São Paulo, Brasil, 13092108
        • Recrutamento
        • Trialstar Campinas
        • Contato:
        • Investigador principal:
          • Márcia S Carvalho, Endocrinologist
      • São Paulo, São Paulo, Brasil, 01139000
        • Recrutamento
        • Synvia Clinical Barra Funda
        • Contato:
        • Investigador principal:
          • Sara C Siqueira, Endocrinologist
      • São Paulo, São Paulo, Brasil, 03164000
        • Recrutamento
        • Iscp Sociedade Educacional
        • Contato:
        • Investigador principal:
          • Matheus A Silva, Neurologist

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

The following criteria must be met for a participant to be included in the study:

  1. Participants of either sex, aged 18 to 75 years.
  2. Be able to understand and agree to participate in the study, undergo the procedures, and attend the visits, as indicated by signing the informed consent form approved by the CEP/Conep System.
  3. Have a diagnosis of peripheral neuropathic pain associated with:

    • diabetes mellitus (type 1 or 2), with glycated hemoglobin (HbA1c) levels ≤ 11%, documented symptoms of peripheral diabetic neuropathy for at least 6 months, and use of medication for glycemic control at a stable dose for at least 30 days.
    • postherpetic neuralgia, with pain symptoms for at least 3 months following a skin rash due to an acute episode of herpes zoster.
  4. Presence of neuropathic pain, with an intensity of ≥ 4 on the 11-point DPRS numerical scale (from 0 "no pain" to 10 "worst possible pain"‡). ‡ Pain intensity ≥ 4 will be confirmed at the initial visit (IV); during the screening/randomization visit, Participant Diary No. 1 containing the DPRS scales will be provided, in which the participant will record pain intensity daily upon waking and at the end of the day for 7 days (±2 days). The mean value for pain intensity recorded during the Screening/Randomization Phase will be used to confirm eligibility at the initial visit (IV).
  5. Participants who are unable to become pregnant (postmenopausal women, defined as 12 months or more of amenorrhea, or who have undergone surgical sterilization*; and men who have undergone vasectomy**) OR participants of reproductive potential who agree to use a reliable method of contraception***.

    • Female sterilization (undergoing bilateral surgical oophorectomy with or without hysterectomy), total hysterectomy, or tubal ligation at least 6 weeks prior to administration of the investigational drug.

      • Male sterilization at least 6 months prior to screening. *** If the participant is of childbearing age and decides to participate in the study, they must use or request that their partner use a safe contraceptive method. A safe contraceptive method is defined as the use of at least one of the following: condoms, a diaphragm, and/or a hormonal method (estrogenic and/or progestogenic) in the form of medication, including oral, vaginal, injectable, transdermal, and intrauterine devices. Only participants who expressly declare themselves exempt from the risk of pregnancy-whether because they do not engage in sexual activity or because they engage in it in a non-reproductive manner-will have the right to participate in the study without the mandatory use of contraceptives. Examples include participants who have undergone a vasectomy, those with an infertile partner, or those practicing total heterosexual abstinence.

The decision regarding the best contraceptive method to use will be made jointly by the physician and the study participant. If there are any costs involved, the chosen contraceptive method will be provided by the sponsor free of charge for as long as necessary. In addition, condoms with spermicide will be provided to participants at all study visits, when applicable.

Exclusion Criteria:

A positive response to any of the following criteria will exclude the participant from the study:

  1. The presence of pain unrelated to the primary diagnosis of diabetic peripheral neuropathy or postherpetic neuralgia that could interfere with the evaluation.
  2. Any skin condition that potentially alters sensation in the affected dermatome or area of neuropathic involvement, which could interfere with the assessment.
  3. Having undergone neurosurgical therapy for the treatment of neuropathy.
  4. Current use, or use within the past 7 days, of nerve block therapy and/or medications commonly used to treat neuropathic pain (e.g., benzodiazepines, skeletal muscle relaxants, capsaicin, local anesthetics, opioids, memantine), antiepileptic drugs (e.g., carbamazepine, clonazepam, phenytoin, valproic acid, lamotrigine, topiramate, gabapentin), antidepressants (e.g., tricyclics, serotonin reuptake inhibitors, venlafaxine), and potential neurotoxins (e.g., hydroxychloroquine, deferoxamine, thioridazine, vigabatrin).
  5. History of treatment failure or hypersensitivity to pregabalin or gabapentin.
  6. History of neoplastic disease within the past 2 years (excluding basal cell carcinoma), neurological disease, unstable heart disease, psychiatric conditions (particularly suicidal ideation), and/or infection with hepatitis B, hepatitis C, or HIV.
  7. Current laboratory abnormalities in liver enzymes (elevated AST and/or ALT 2.5 times the upper limit of the reference range) and/or renal insufficiency (glomerular filtration rate < 60 mL/min/1.73 m²).
  8. History of illicit drug abuse in the past 2 years.
  9. History of alcoholism (average alcohol intake exceeding 3 standard drinks* per day or more than 7 standard drinks per week for women, and exceeding 4 standard drinks per day or more than 14 standard drinks per week for men) in the past 2 years.

    * A standard drink is: a can of regular beer (330 mL at 4%); a shot of distilled spirits (30 mL at 40%); a glass of wine or a small glass of sherry (100 mL at 12% or 70 mL at 18%); a small glass of liqueur or similar (50 mL at 25%) (53).

  10. Being pregnant, breastfeeding, or intending to become pregnant during the study period.
  11. Having participated in clinical studies in the past 12 (twelve) months, unless there may be a direct benefit to the study participant, at the investigator's discretion.
  12. Having any condition that prevents participation, at the investigator's discretion.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Dobro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Pregabalin XR: Extended-release pregabalin
Pregabalin XR: will receive extended-release pregabalin tablets at an initial dose of 82.5 mg once daily (during the first week for titration). The dose may be adjusted every 7 days during the first 4 weeks of treatment, up to a maximum of 660 mg once daily. In addition, the experimental group may receive a placebo twice daily.
Pregabalin XR: extended-release tablet, with an initial dose of 82.5 mg once daily. The dose may be adjusted every 7 days during the first 4 weeks of treatment, up to a maximum of 660 mg once daily. In addition, the experimental group will receive a placebo twice daily.
experimental placebo
Comparador Ativo: Dorene Tabs: Immediate-release pregabalin
Dorene Tabs: will receive immediate-release pregabalin tablets (Dorene Tabs) at a starting dose of 75 mg twice daily. The dose may be adjusted every 7 days during the first 4 weeks of treatment, up to a maximum of 300 mg twice daily. In addition, the comparison group will receive a placebo once daily.
Placebo comparador
Pregabalin immediate-release tablets, at an initial dose of 75 mg twice daily. The dose may be adjusted every 7 days during the first 4 weeks of treatment, up to a maximum of 300 mg twice daily. In addition, the comparator group will receive a placebo once daily.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Difference in the mean pain intensity score 16 weeks after the start of treatment, compared to baseline
Prazo: 16 weeks

Difference in the mean pain intensity score 16 weeks after the start of treatment, compared to baseline, between the study drug and the comparator, as measured by the 11-point DPRS (Daily Pain Rating Scale) (ranging from 0 "no pain" to 10 "worst possible pain").

Participants completed the baseline scale at the research center and filled it out daily at home until visit V8, twice a day. The average number of scales will be calculated by dividing the number of scales completed by the number of days on which they were completed.

16 weeks

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
To assess improvement in neuropathic pain during treatment.
Prazo: 1 to 12 weeks
Difference in the mean pain intensity score at 1, 4, 8, and 12 weeks after the start of treatment, compared to baseline, between the experimental drug and the comparator, as measured by the 11-point DPRS scale.
1 to 12 weeks
To assess the proportion of participants who experienced significant improvement in neuropathic pain during and at the end of treatment.
Prazo: 1 to 16 weeks
Difference in the mean total pain score at 1, 4, 8, 12, and 16 weeks after the start of treatment, compared to baseline, between the experimental drug and the comparator, as measured by the SF-MPQ (Short Form - McGill Pain Questionnaire).
1 to 16 weeks
To assess improvements in the impact of neuropathic pain on sleep, quality of life, and symptoms of anxiety and depression during and at the end of treatment.
Prazo: 1 to 16 weeks

Proportion of participants with a ≥ 30% reduction in pain intensity at 1, 4, 8, 12, and 16 weeks after the start of treatment, compared to baseline, between the study drug and the comparator, as measured by the 11-point DPRS scale. Difference in the mean score for pain interference with sleep at 4, 8, 12, and 16 weeks after the start of treatment, relative to baseline, between the study drug and the comparator, as measured by the 11-point DSIS (Daily Sleep Interference Scale) (ranging from 0 "pain did not interfere with sleep" to 10 "pain completely interfered with sleep").

Difference in quality of life at 4, 8, 12, and 16 weeks after the start of treatment, compared to baseline, between the experimental drug and the comparator, as measured by the WHOQoL-BREF (World Health Organization Quality of Life Scale).

Difference in anxiety and depression symptoms at 4, 8, 12, and 16 weeks after the start of treatment, compared to baseline, between the experimental drug and the comparator.

1 to 16 weeks
Assess the participant's overall perception of change at the end of treatment.
Prazo: Week 16
Proportion of participants who rated their clinical condition as "much better," "moderately better," "slightly better," "no change," "slightly worse," "moderately worse," and "much worse," using the PGIC (Patient Global Impression of Change) scale, when comparing the experimental drug to the comparator 16 weeks after the start of treatment.
Week 16
Evaluate the use of rescue medication.
Prazo: 1 to 16 weeks.
Proportion of participants who used rescue medication, frequency of use, dose, and duration, comparing the experimental medication with the comparator.
1 to 16 weeks.

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Safety Outcome: To evaluate the safety of extended-release pregabalin tablets compared with immediate-release pregabalin tablets in participants with diabetic neuropathy or postherpetic neuralgia.
Prazo: 19 weeks.
Incidence rate of serious and non-serious adverse events-both related and unrelated-by treatment group throughout the clinical trial, based on an analysis of data obtained from clinical and physical examinations and laboratory tests.
19 weeks.

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Investigador principal: Mariana Ferreira, Sports Nutrition, A2Z CLINICAL - CENTRO DE PESQUISA CLÍNICA, Valinhos, São Paulo 13271130

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

18 de junho de 2026

Conclusão Primária (Estimado)

1 de junho de 2027

Conclusão do estudo (Estimado)

1 de junho de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

18 de junho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

13 de julho de 2026

Primeira postagem (Real)

20 de julho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

20 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

13 de julho de 2026

Última verificação

1 de julho de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • HYP008-24

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

produto fabricado e exportado dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .