Tracers / [225Ac]Ac-Macropa-7065

[225Ac]Ac-Macropa-7065

Also written as [Ac-225]Macropa-7065
Radionuclide
Ac-225 t½ 14284.8 min
Modality
Therapy
Production route
Stage
Syntheses indexed
1

What it is

Compound class
Antibody-chelator conjugate (radioimmunoconjugate, Macropa-PEG4 chelator on anti-aITGB2 antibody clone 7065)
Target / mechanism
Active conformation of integrin-β2 (aITGB2), a tumor-selective epitope on AML cells, targeted by conformation-specific antibody clone 7065 PMID 41282197
Clinical application
Radioimmunotherapy for Acute Myeloid Leukemia targeting aITGB2, evaluated preclinically in AML models with potential for future clinical translation PMID 41282197
Theranostic pair

Regulatory status

FDA
EMA (centralised)
Other approvals
Brand names

Clinical use

Typical injected activity
Uptake time

Reported in the literature. Not a dosing recommendation.

Published syntheses

ModuleCassettePurificationYield %RCP %Precursor / supplierSource
Manual synthesisSPE55 ± 1.76 %>98%Macropa-PEG4-706541282197
2025 Res Sq
An aliquot of 4 μL (approx. 1.11 MBq of Ac-225) was added to a vial followed by 50 μL of NH4OAc (2M, pH 5.8) and 20 μL of L-Ascorbic acid (150 mg/mL) and 120 μg of Macropa-PEG4-7065 (7.6 μL). — [225Ac]Macropa-PEG4-7065 and [225Ac]Macropa-PEG4-IgG were obtained with a radiochemical yield of 55 ± 1.76 % and 65 ± 0.06 % yield (n=4 syntheses each) with radiochemical purity exceeding 98%

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Notes

Added at stage 21 from therapy-discovered.xlsx (bulk PubMed search by isotope/therapy-type/known-agent, not individually researched yet) -- 2 articles found. Target/mechanism, clinical application, indications, approval and precursor fields still need per-agent research and are intentionally left empty. Compound class inferred from precursor name (not stated outright) -- PMID 41282197: 'Macropa-PEG4-7065 and Macropa-PEG4-IgG were obtained with antibody-to-chelator ratios of 1.61 and 0.43'. | Stage 28: added indication(s) onc-leukemia from consolidated missing-rubric review.