A Phase 1 Study of 99mTc-p5+14 in Healthy Volunteers and Patients With AL or ATTR Systemic Amyloidosis
A legfontosabb adatok
- Ki végzi
- University of Tennessee Graduate School of Medicine
- Hol
- Knoxville (Egyesült Államok)A helyszín megnézése
- Azonosító
- Állapot
- Toboroz
- Fázis
- 1. fázis
- Résztvevők
- 31 fő, tervezett
- Kezdés
- 2023. szept. 18.
- Várható befejezés
- 2027. jún.
- A vizsgálat típusa
- Beavatkozással járó, 2 csoport
- A vizsgált kezelések
- 99mTc-p5+14 is an amyloid reactive peptide labeled with technetium-99m.
- 99mTc-Pyrophosphate
- A regiszteradat frissítve
- 2026. július 24.
Ki vehet részt
MI-összefoglaló
A vizsgálat saját részvételi feltételeiből. Gép olvasta ki az oldalon álló regiszterszövegből, ezért tévedhet. Hogy ki vehet részt, azt a lenti regiszterszöveg és a vizsgálat csapata dönti el.
A vizsgálat egészséges önkénteseket, valamint AL vagy ATTR szisztémás amiloidózisban szenvedő felnőtteket keres, többnyire szívérintettséggel, a 99mTc-p5+14 nevű képalkotó nyomjelző kipróbálásához.
- Életkor
- 18 évnél idősebb.
- Nem
- Mindkét nem jelentkezhet.
- A betegség stádiuma
- Egészséges önkéntesek, vagy igazolt AL vagy ATTR szisztémás amiloidózisban szenvedők. A 2. és 4. rész a szívamiloidózis diagnózisát kéri a szűréstől számított 4 éven belül, vagy régebbit, ha a klinikai adatok szerint még fennáll.
- Korábbi kezelés
- A beadás előtti 7 napban nem kaphatott heparint vagy heparinszerű szert. Korábban nem kaphatott p5+14-et. Az elmúlt 6 hónapban nem kaphatott nyomjelző injekciót másik nukleáris amiloid képalkotó vizsgálatban.
- Biomarker vagy leletérték
- Az amiloidózist szövettani mintában látható amiloidlerakódás és szívképalkotás vagy vérmarkerek igazolják. ATTR esetén nem lehet kóros a szérum szabad könnyűlánc. A 4. rész negatív 99mTc-PYP képalkotó vizsgálatot kér.
A részvétel fő kizáró okai
- Terhes vagy szoptat
- Hemodialízisen vagy peritoneális dialízisen van
- Súlyos klausztrofóbia, vagy olyan állapot, ami miatt a képalkotás nem végezhető el
- Magas májértékek magas bilirubinnal együtt az elmúlt hat hónapban
- QTc-idő 530 ms felett
A regiszter feltételei, szó szerint
Mind a 37 feltétel megnézéseKevesebb
Ki vehet részt
- PART 1
- Understand the study procedures and agree to participate in the study by giving written informed consent
- Be male or female >18 years of age. 3) Women of child-bearing potential (WOCBP) (those who have not been surgically sterilized, are not postmenopausal [i.e., last menstrual period >2 years ago without pharmaceutical intervention], and women who are fertile) must have a negative pregnancy test prior within 24 h prior to infusion
- WOCBP who are not exclusively in same-sex relationships and male participants with female sexual partners who are WOCBP must agree to use adequate contraceptive methods, defined as use of a condom by the male partner combined with use of a highly effective method of contraception by the female partner, for at least 2.5 days after injection of 99mTc-p5+14
- Be a healthy volunteer (n=3) or have a confirmed diagnosis of systemic amyloidosis (n=2) based on either a histologic confirmation with a biopsy containing deposits of apple-green birefringent, Congophilic material with aberrant organ-specific biomarkers indicating amyloid involvement, physical examination, or imaging study
- Healthy volunteers must also meet inclusion criteria for Part 3. PART 2
- Understand the study procedures and agree to participate in the study by giving written informed consent
- Be male or female >18 years of age
- WOCBP (those who have not been surgically sterilized, are not postmenopausal [i.e., last menstrual period >2 years ago without pharmaceutical intervention], and women who are fertile) must have a negative pregnancy test prior within 24 h prior to infusion
- WOCBP who are not exclusively in same-sex relationships and male participants with female sexual partners who are WOCBP must agree to use adequate contraceptive methods, defined as use of a condom by the male partner combined with use of a highly effective method of contraception by the female partner, for at least 2.5 days after injection of 99mTc-p5+14
- Have one of the following:; a confirmed diagnosis of systemic AL amyloidosis, based on either a histologic confirmation of a cardiac or extracardiac biopsy containing deposits of apple-green birefringent, Congophilic material AND imaging parameters (ECHO or CMR) indicative of cardiac involvement; a confirmed diagnosis of systemic ATTR amyloidosis, based on either a histologic confirmation of a cardiac biopsy containing deposits of apple-green birefringent, Congophilic material or extracardiac biopsy and imaging parameters (ECHO or CMR or 99mTc-PYP) indicative of cardiac involvement, with no evidence of abnormal serum free light chains
- Have a diagnosis of cardiac amyloidosis within 4 years of screening, or longer if contemporaneous clinical data indicates the persistent presence of cardiac amyloidosis; PART 3
- Understand the study procedures and agree to participate in the study by giving written informed consent
- Be male or female >18 years of age
- WOCBP (those who have not been surgically sterilized, are not postmenopausal [i.e., last menstrual period >2 years ago without pharmaceutical intervention], and women who are fertile) must have a negative pregnancy test prior within 24 h prior to infusion
- WOCBP who are not exclusively in same-sex relationships and male participants with female sexual partners who are WOCBP must agree to use adequate contraceptive methods, defined as use of a condom by the male partner combined with use of a highly effective method of contraception by the female partner, for at least 2.5 days after injection of 99mTc-p5+14
- Be in good general health, as determined by no clinically significant findings (including Type 2 diabetes mellitus) in the opinion of the Investigator from review of the medical history
- Does not have a diagnosis of amyloidosis nor has a first- or second-degree relative (parent, sibling, child, aunt, uncle, niece, nephew) with confirmed or suspected familial amyloidosis; PART 4
- Understand the study procedures and agree to participate in the study by giving written informed consent
- Be male or female >18 years of age
- Women of child-bearing potential (those who have not been surgically sterilized, are not postmenopausal [i.e., last menstrual period >2 years ago without pharmaceutical intervention], and women who are fertile) must have a negative pregnancy test prior within 24 h prior to infusion
- WOCBP who are not exclusively in same-sex relationships and male participants with female sexual partners who are WOCBP must agree to use adequate contraceptive methods, defined as use of a condom by the male partner combined with use of a highly effective method of contraception by the female partner, for at least 2.5 days after injection of 99mTc-p5+14
- Has a confirmed diagnosis of systemic ATTR amyloidosis, based on either a histologic confirmation of a cardiac biopsy containing deposits of apple-green birefringent, Congophilic material or extracardiac biopsy and imaging parameters (ECHO or CMR), or abnormal serum biomarkers indicative of cardiac involvement, with no evidence of abnormal serum free light chains
- Has a diagnosis of cardiac amyloidosis within 4 years of screening, or longer if contemporaneous clinical data indicates the persistent presence of cardiac amyloidosis
- Has a negative 99mTc-PYP imaging study
Ki nem vehet részt
- Due to annual dosimetry limitations, patients who have participated in another nuclear medicine amyloid imaging clinical trial protocol and received tracer injection in the last 6 months
- Receiving hemodialysis or peritoneal dialysis
- Has received heparin or heparin analogs (e.g., enoxaparin, dalteparin, fondaparinux) within seven (7) days prior to 99mTc-p5+14 administration
- Have previously received any dose of p5+14, in any form
- Is mentally or legally incapacitated, has significant emotional problems at the time of the study, or has a history of psychosis
- Has severe claustrophobia or any medical condition that would prevent completion of the imaging protocol
- Has any illness that, in the opinion of the Investigator, might confound the results of the study or pose additional risk to the subject
- Have a serum AST >2x the upper limit of normal or 80 IU/L AND total bilirubin > 1.5x the upper limit of normal or 1.8 mg/dL within the previous six months of enrollment
- Have a serum ALT >2x the upper limit of normal or 64 IU/L AND total bilirubin > 1.5x the upper limit of normal or 1.8 mg/dL within the previous six months of enrollment
- Have a QTc interval, using Bazett's formula (QTcB) of >530 ms, measured within six months prior to enrollment, or assessed prior to injection
- PARTS 1-4
- Is pregnant or breast-feeding
Helyszínek itt: Egyesült Államok
- University of Tennessee Graduate School of MedicineKnoxville, Egyesült ÁllamokContact: Emily B Martin, PhDRésztvevőt keres
A vizsgálatról
Mit akar kideríteni a vizsgálat
This study will investigate 99mTc-p5+14, an amyloid-reactive synthetic peptide, p5+14, radiolabeled with technetium-99m, as a radiotracer for detecting paamyloid deposits in patients with AL or ATTR-associated systemic amyloidosis, notably with cardiac involvement.
A vizsgálat 2 csoportja
- Estimation of dosimetry for 99mTc-p5+14 and Biodistribution Of 99mtc-p5+14 In Healthy SubjectsA vizsgált kezelés
For dosimetry, healthy subjects (n=3) and patients with a confirmed diagnosis of AL (n=1) or ATTR amyloidosis (n=1) will be administered a single IV dose of up to 1 mg of 99mTc-p5+14 (\~20 mCi) by slow push (\~1 mL/5 sec.). Subjects will then undergo serial planar scintigraphic imaging at \~30 minutes, \~1 hour, \~2 hours, \~4 hours, \~6 hours, and \~24 hours post-injection. At the 4-hour time point, the subject will also undergo a single SPECT/CT scan to provide additional data for estimating dosimetry. Before injection of the radiotracer and at each imaging session, \~2 -3 mL of blood will be acquired to determine the whole blood radioactivity. An echo examination will also be performed. For physiological biodistribution, healthy volunteers (n=5) will undergo an echo examination, thereafter, they will be administered a single IV dose of 99mTc-p5+14 (20 mCi) and will undergo a planar image acquisition followed by SPECT/CT imaging at \~1 hour and \~3 hours post-injection.
Kezelés: 99mTc-p5+14 is an amyloid reactive peptide labeled with technetium-99m.
- Biodistribution in patients with systemic AL or ATTR amlyoidosisA vizsgált kezelés
On Day 1, patients with a confirmed diagnosis of systemic AL or ATTR (with or without a positive PyP scan) will be administered a single IV dose of up to 1 mg of 99mTc-p5+14 (\~20 mCi) by slow push (\~1 mL/5 sec.). At \~1 hour and \~3 hours post-injection, patients will undergo whole body planar imaging followed by abdominothoracic SPECT/CT imaging. Vital signs (blood pressure, respiration rate, temperature, and pulse) will be acquired before injection of the 99mTc-p5+14, and at \~3 hours post injection. ECG measurements will be made within 1 hour prior to, and within 15 minutes after, injection. On Day 3, patient will undergo a trans thoracic echo examination. On Day 4, patients will undergo Technescan™ 99mTc-PYP (20 mCi) planar and SPECT/CT imaging at \~1 hour and \~3 hours post-injection. Vital signs (blood pressure, respiration rate, temperature, and pulse) will be acquired before injection of the 99mTc-PYP, and at \~3 hours post injection. ECG measurements will be made as on Day 1.
Kezelés: 99mTc-p5+14 is an amyloid reactive peptide labeled with technetium-99m. és 99mTc-Pyrophosphate
Kérdések a vizsgálat csapatának
- Milyen gyakran kell bejárnom, és egy-egy alkalom mennyi ideig tart?
- Megtérítik az utazási költséget?
- Megtarthatom a saját orvosomat?
- Mi történik, ha ki akarok lépni?
Contact the study team: see the registry record → Contacts and Locations
Oldal nyomtatása az orvosomnakAdatok és források
- Regiszteradat
- Szerepel a ClinicalTrials.gov-on.
- Hivatalos cím
- Phase 1 Study to Investigate the Dosimetry and Biodistribution of a Single Intravenous Administration of 99mTc-p5+14 Using SPECT/CT Imaging and Planar Gamma Scintigraphy in Healthy Volunteers and Patients With AL or ATTR Systemic Amyloidosis
- MI-összefoglaló
- A vizsgálat saját részvételi feltételeiből. Gépi kiolvasás: 2026. november 12.
- A regiszteradat frissítve
- 2026. július 24.