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Résztvevőt keres itt: Egyesült Államok1. fázis

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

  1. Milyen gyakran kell bejárnom, és egy-egy alkalom mennyi ideig tart?
  2. Megtérítik az utazási költséget?
  3. Megtarthatom a saját orvosomat?
  4. Mi történik, ha ki akarok lépni?

Contact the study team: see the registry record → Contacts and Locations

Oldal nyomtatása az orvosomnak

Adatok 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.