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Increasing Access and Futureproofing PET Radiopharmaceutical Manufacturing in Nuclear Medicine, and the Role of Theranostic Pairs.
Increasing Access and Futureproofing PET Radiopharmaceutical Manufacturing in Nuclear Medicine, and the Role of Theranostic Pairs.
상세정보
- 자료유형
- 학위논문(국외)
- 기본표목-개인명
- 표제와 책임표시사항
- Increasing Access and Futureproofing PET Radiopharmaceutical Manufacturing in Nuclear Medicine, and the Role of Theranostic Pairs.
- 발행, 배포, 간사 사항
- 발행, 배포, 간사 사항
- 형태사항
- 562 p.
- 일반주기
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 일반주기
- Advisor: Scott, Peter J. H.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2025.
- 요약 등 주기
- 요약Approval of radiotherapies, Lu-177 DOTATATE (Lutathera) for neuroendocrine tumors and Lu-177 PSMA-617 (Pluvicto) for prostate cancer, has increased demand for positron emission tomography (PET) imaging agents. Since PET radiopharmaceuticals are manufactured on-demand (due to half-life of the isotope), reproducible and optimized workflows are required. The goal of this dissertation is to optimize gallium-68 (Ga-68) production, and futureproof carbon-11 (C-11) and fluorine-18 (F-18) radiopharmaceutical production to increase access to these PET agents so patients can be referred for treatment with appropriate therapeutic agents without delay. Additionally, by monitoring response to approved radiotherapies (Lutathera, and Pluvicto), future theranostic pairs (a diagnostic agent pair with a therapeutic agent) can be developed. Initial work optimized the routine production of Ga-68 DOTATATE (NETSpot) and Ga-68 PSMA-11 (Locametz and Illuccix) at the University of Michigan using commercial 68Ge/68Ga generators. Comparing Locametz and Illuccix demonstrated both kits to be equivalent with comparable clinical images. From this work, a recommendation that nuclear medicine departments should use Locametz as it aligns with generator-based production workflow, and that PET manufacturers use Illuccix as cyclotron-based production of Ga-68 can act as an alternative to generator-based production. Subsequently, development of a fractional elution protocol for purifying cyclotron produced gallium-68 led to the labeling of NETSpot, and Illuccix kits with radiochemical purity (RCP) 95%.Formulation and development of research kits, including labeling of AE105, FAPI-04, and pentixafor, increased access to new imaging agents and targets (urokinase plasminogen activator receptor, fibroblast activation protein, chemokine receptor 4) of interest in oncology and/or cardiology. The translation of 14 carbon-11 radiopharmaceuticals (C-11 choline, C-11 Pittsburgh compound B, C-11 PE2i, C-11 carfentanil, C-11 methionine, C-11 sarcosine, C-11 raclopride, C-11 dihydrotetrabenazine, C-11 flumazenil, C-11 butyrate, C-11 butanol, C-11 acetate, C-11 acetyl acetate, C-11 glycine) from fixed-tube to cassette-based synthesizers (FASTLab) using resin, reactor, or loop-based techniques, with various carbon-11 synthons (methyl iodide, methyl triflate, carbon dioxide, carbon monoxide, cyanide) demonstrated the robustness of the FASTLab and futureproofing radiopharmaceutical production from a regulatory perspective. All 14 radiopharmaceuticals had RCP 90%, with comparable radiochemical yields to established syntheses using fixed-tube synthesizers. Additionally, F-18 fluorocholine and F-18 fluorodeoxyglucose were synthesized using class III solvents, improving safety by reducing the risk for elevated residual solvents. This proof-of-concept optimization can be further explored using other fluorine-18 radiopharmaceuticals to increase access in the future. Finally, the safety of radiotherapeutic agents used at the University of Michigan were reviewed to establish real world safety profile following FDA approval of carefully controlled clinical trials. Lutathera was demonstrated to be safe and effective. When adverse events were mild, dose reduction or cycle delay led to improved tolerance to therapy. Although dose reduction led to a greater increase in completing of all 4 cycles of therapy, cycle delay may be necessary when transient neutropenia, or thrombocytopenia is observed. Patients on Lutathera had an 8.4 mL/min decline in glomerular filtration when compared to control (4 mL/min) over 4-years, suggesting potential risk for long-term renal toxicity, requiring further investigation. Additionally, understanding molar activity effects in therapeutic doses, low Pluvicto uptake can be investigated to develop personalized dosing schedules. Commercial vials indicated molar activity of 2700-5730 Ci/mmol. Understanding posology on therapy completion, molar activity effects, and potential short-term and long-term adverse events, will help guide the development of future theranostic pairs, improving therapy compliance and patient outcomes.
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 부출표목-단체명
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 원문정보보기
MARC
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■1001 ▼aWang, Ivan E.
■24510▼aIncreasing Access and Futureproofing PET Radiopharmaceutical Manufacturing in Nuclear Medicine, and the Role of Theranostic Pairs.
■260 ▼a[S.l.]▼bUniversity of Michigan. ▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a562 p.
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Scott, Peter J. H.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2025.
■520 ▼aApproval of radiotherapies, Lu-177 DOTATATE (Lutathera) for neuroendocrine tumors and Lu-177 PSMA-617 (Pluvicto) for prostate cancer, has increased demand for positron emission tomography (PET) imaging agents. Since PET radiopharmaceuticals are manufactured on-demand (due to half-life of the isotope), reproducible and optimized workflows are required. The goal of this dissertation is to optimize gallium-68 (Ga-68) production, and futureproof carbon-11 (C-11) and fluorine-18 (F-18) radiopharmaceutical production to increase access to these PET agents so patients can be referred for treatment with appropriate therapeutic agents without delay. Additionally, by monitoring response to approved radiotherapies (Lutathera, and Pluvicto), future theranostic pairs (a diagnostic agent pair with a therapeutic agent) can be developed. Initial work optimized the routine production of Ga-68 DOTATATE (NETSpot) and Ga-68 PSMA-11 (Locametz and Illuccix) at the University of Michigan using commercial 68Ge/68Ga generators. Comparing Locametz and Illuccix demonstrated both kits to be equivalent with comparable clinical images. From this work, a recommendation that nuclear medicine departments should use Locametz as it aligns with generator-based production workflow, and that PET manufacturers use Illuccix as cyclotron-based production of Ga-68 can act as an alternative to generator-based production. Subsequently, development of a fractional elution protocol for purifying cyclotron produced gallium-68 led to the labeling of NETSpot, and Illuccix kits with radiochemical purity (RCP) 95%.Formulation and development of research kits, including labeling of AE105, FAPI-04, and pentixafor, increased access to new imaging agents and targets (urokinase plasminogen activator receptor, fibroblast activation protein, chemokine receptor 4) of interest in oncology and/or cardiology. The translation of 14 carbon-11 radiopharmaceuticals (C-11 choline, C-11 Pittsburgh compound B, C-11 PE2i, C-11 carfentanil, C-11 methionine, C-11 sarcosine, C-11 raclopride, C-11 dihydrotetrabenazine, C-11 flumazenil, C-11 butyrate, C-11 butanol, C-11 acetate, C-11 acetyl acetate, C-11 glycine) from fixed-tube to cassette-based synthesizers (FASTLab) using resin, reactor, or loop-based techniques, with various carbon-11 synthons (methyl iodide, methyl triflate, carbon dioxide, carbon monoxide, cyanide) demonstrated the robustness of the FASTLab and futureproofing radiopharmaceutical production from a regulatory perspective. All 14 radiopharmaceuticals had RCP 90%, with comparable radiochemical yields to established syntheses using fixed-tube synthesizers. Additionally, F-18 fluorocholine and F-18 fluorodeoxyglucose were synthesized using class III solvents, improving safety by reducing the risk for elevated residual solvents. This proof-of-concept optimization can be further explored using other fluorine-18 radiopharmaceuticals to increase access in the future. Finally, the safety of radiotherapeutic agents used at the University of Michigan were reviewed to establish real world safety profile following FDA approval of carefully controlled clinical trials. Lutathera was demonstrated to be safe and effective. When adverse events were mild, dose reduction or cycle delay led to improved tolerance to therapy. Although dose reduction led to a greater increase in completing of all 4 cycles of therapy, cycle delay may be necessary when transient neutropenia, or thrombocytopenia is observed. Patients on Lutathera had an 8.4 mL/min decline in glomerular filtration when compared to control (4 mL/min) over 4-years, suggesting potential risk for long-term renal toxicity, requiring further investigation. Additionally, understanding molar activity effects in therapeutic doses, low Pluvicto uptake can be investigated to develop personalized dosing schedules. Commercial vials indicated molar activity of 2700-5730 Ci/mmol. Understanding posology on therapy completion, molar activity effects, and potential short-term and long-term adverse events, will help guide the development of future theranostic pairs, improving therapy compliance and patient outcomes.
■590 ▼aSchool code: 0127.
■650 4▼aMedical imaging.
■650 4▼aArt therapy.
■650 4▼aNuclear chemistry.
■653 ▼aPositron emission tomography
■653 ▼aGallium-68
■653 ▼aCarbon-11
■653 ▼aFluorine-18
■653 ▼aTheranostic pairs
■653 ▼aRadiochemistry
■690 ▼a0574
■690 ▼a0754
■690 ▼a0738
■71020▼aUniversity of Michigan▼bMedicinal Chemistry.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359874▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


