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Bayesian Statistical Methods for Adaptive Biosimilarity Clinical Trials and Joint Models
Bayesian Statistical Methods for Adaptive Biosimilarity Clinical Trials and Joint Models
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105311
- ISBN
- 9798270295516
- DDC
- 574
- 저자명
- Damone, Emily M.
- 서명/저자
- Bayesian Statistical Methods for Adaptive Biosimilarity Clinical Trials and Joint Models
- 발행사항
- [Sl] : The University of North Carolina at Chapel Hill, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 114 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-07, Section: B.
- 주기사항
- Includes supplementary digital materials.
- 주기사항
- Advisor: Ibrahim, Joseph G.;Psioda, Matthew A.
- 학위논문주기
- Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
- 초록/해제
- 요약Many methods exist to jointly model either recurrent and related terminal survival events or longitudinal outcome measures and related terminal survival event. However, few methods exist which can account for the dependency between all three outcomes of interest, and none allow for the modeling of all three outcomes without strong correlation assumptions. We propose a joint model which uses subject-specific random effects to connect the survival model (terminal and recurrent events) with a longitudinal outcome model. In the proposed method, proportional hazards models with shared frailties are used to model dependence between the recurrent and terminal events, while a separate (but correlated) set of random effects are utilized in a generalized linear mixed model to model dependence with longitudinal outcome measures. All random effects are related based on an assumed multivariate normal distribution. The proposed joint modeling approach allows for flexible models, particularly for unique longitudinal trajectories, that can be utilized in a wide range of health applications. We evaluate the model through simulation studies as well as through an application to data from the Atherosclerosis Risk in Communities (ARIC) study.Separately, we consider approaches for clinical trials for biosimilars. Biosimilars are biological products with no clinically meaningful difference in safety, purity, and potency when compared to an approved biologic. Biosimilars are interchangeable when the biosimilar has the same expected risk, in terms of safety and efficacy, when compared to the reference biologic. The FDA regards biosimilarity and interchangeability approval based on totality of evidence approaches. The nature of biosimilars, and their comparison in clinical trials to reference products (RP), leads to a natural utilization of historical information on the RP in the elicitation of prior distributions as well as the efficient utilization of study participants in an adaptive clinical trial for both biosimilarity and interchangeability designations. We thus propose a two-stage clinical trial. Stage 1 consists of a 2-arm randomized clinical trial with clinical efficacy endpoint, utilizing an informative robust Meta-Analytic-Predictive (MAP) prior on the reference product arm estimated with historical information on the RP, allowing for a reduction in the RP arm. Stage 2 consists of a 2-arm randomized switching study, where participants with clinical success from the RP arm of Stage 1 are carried forward to determine interchangeability. We similarly utilize an informative robust MAP prior on the RP arm with available PK data. We demonstrate the methodology for the design and analysis of a biosimilar clinical program through simulation. We consider the Rheumatoid Arthritis clinical space, as might be feasible for a biosimilar to adalimumab.We extend this trial design to the scenario involving multiple therapeutic indications. We utilize a correlated parameter prior (CPP) to induce information sharing on the treatment effect difference for each trial stage, while incorporating rMAP priors on each indication of the reference product. We demonstrate the methodology for the design and analysis of a biosimilars clinical program through simulation and consider trial emulation as feasible for a biosimilar to adalimumab.
- 일반주제명
- Biostatistics
- 일반주제명
- Statistics
- 일반주제명
- Biology
- 일반주제명
- Bioengineering
- 키워드
- Biosimilarity
- 키워드
- Joint
- 기타저자
- The University of North Carolina at Chapel Hill Biostatistics
- 기본자료저록
- Dissertations Abstracts International. 87-07B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798270295516
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aDamone, Emily M.
■24510▼aBayesian Statistical Methods for Adaptive Biosimilarity Clinical Trials and Joint Models
■260 ▼a[Sl]▼bThe University of North Carolina at Chapel Hill▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a114 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-07, Section: B.
■500 ▼aIncludes supplementary digital materials.
■500 ▼aAdvisor: Ibrahim, Joseph G.;Psioda, Matthew A.
■5021 ▼aThesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
■520 ▼aMany methods exist to jointly model either recurrent and related terminal survival events or longitudinal outcome measures and related terminal survival event. However, few methods exist which can account for the dependency between all three outcomes of interest, and none allow for the modeling of all three outcomes without strong correlation assumptions. We propose a joint model which uses subject-specific random effects to connect the survival model (terminal and recurrent events) with a longitudinal outcome model. In the proposed method, proportional hazards models with shared frailties are used to model dependence between the recurrent and terminal events, while a separate (but correlated) set of random effects are utilized in a generalized linear mixed model to model dependence with longitudinal outcome measures. All random effects are related based on an assumed multivariate normal distribution. The proposed joint modeling approach allows for flexible models, particularly for unique longitudinal trajectories, that can be utilized in a wide range of health applications. We evaluate the model through simulation studies as well as through an application to data from the Atherosclerosis Risk in Communities (ARIC) study.Separately, we consider approaches for clinical trials for biosimilars. Biosimilars are biological products with no clinically meaningful difference in safety, purity, and potency when compared to an approved biologic. Biosimilars are interchangeable when the biosimilar has the same expected risk, in terms of safety and efficacy, when compared to the reference biologic. The FDA regards biosimilarity and interchangeability approval based on totality of evidence approaches. The nature of biosimilars, and their comparison in clinical trials to reference products (RP), leads to a natural utilization of historical information on the RP in the elicitation of prior distributions as well as the efficient utilization of study participants in an adaptive clinical trial for both biosimilarity and interchangeability designations. We thus propose a two-stage clinical trial. Stage 1 consists of a 2-arm randomized clinical trial with clinical efficacy endpoint, utilizing an informative robust Meta-Analytic-Predictive (MAP) prior on the reference product arm estimated with historical information on the RP, allowing for a reduction in the RP arm. Stage 2 consists of a 2-arm randomized switching study, where participants with clinical success from the RP arm of Stage 1 are carried forward to determine interchangeability. We similarly utilize an informative robust MAP prior on the RP arm with available PK data. We demonstrate the methodology for the design and analysis of a biosimilar clinical program through simulation. We consider the Rheumatoid Arthritis clinical space, as might be feasible for a biosimilar to adalimumab.We extend this trial design to the scenario involving multiple therapeutic indications. We utilize a correlated parameter prior (CPP) to induce information sharing on the treatment effect difference for each trial stage, while incorporating rMAP priors on each indication of the reference product. We demonstrate the methodology for the design and analysis of a biosimilars clinical program through simulation and consider trial emulation as feasible for a biosimilar to adalimumab.
■590 ▼aSchool code: 0153.
■650 4▼aBiostatistics
■650 4▼aStatistics
■650 4▼aBiology
■650 4▼aBioengineering
■653 ▼aBayesian statistical methods
■653 ▼aBiosimilarity
■653 ▼aReference products
■653 ▼aJoint
■690 ▼a0308
■690 ▼a0202
■690 ▼a0306
■690 ▼a0463
■71020▼aThe University of North Carolina at Chapel Hill▼bBiostatistics.
■7730 ▼tDissertations Abstracts International▼g87-07B.
■790 ▼a0153
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360146▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


