Thanks Tom,
A lot to get one's head around.
I was interested in the origin of their technology.
RAD have licensed their original 4 antibodies from NanoMab Technologies to develop for human diagnosis and treatment. They are based on Chinese patent applications, all of which are well above my pay grade. It's a similar arrangement to PAB.
From the IPO Prospectus:
https://assets.website-files.com/61...9de4f8_Radiopharm-Theranostics-Prospectus.pdf
9.4 L
icence Agreements
NanoMab Technologies Limited
Radiopharm entered into a licence agreement with NanoMab Technologies Limited (NanoMab) on 9 July 2021 as amended on 1 August 2021 and 13 October 2021 (NanoMab Agreement).
Under the terms of the NanoMab Agreement, NanoMab grants to Radiopharm the exclusive, royalty-bearing, world-wide, sub-licensable right to develop and commercialise Anti-HER-2, AntiTROP-2, Anti-PD-L1 and Anti-PTK7 camelid single domain antibodies in the field of human diagnostic and therapeutic uses, subject to the qualification set out below.
The NanoMab Agreement grants Radiopharm rights in the following:
(a) the ‘Anti-HER-2 Nanobody and its nucleic acid coding sequences are the subject of, and are claimed in national Phase entries in each of, China, US, Europe and Japan deriving from International Application Number PCT/CN2018/091953, filed on 20 June 2018 and titled ‘Anti-HER-2 Nanobody and Coding Sequence and Use Thereof’;
(b) the ‘Anti-TROP-2 Nanobody and its nucleic acid coding sequences are the subject of, and are claimed in, a provisional patent application No. CN202110750848.6, filed on 2 July 2021 and titled ‘Anti-TROP-2 Nanobody and Coding Sequence and Use Thereof’;
(c) the Anti-PTK7 Nanobody and its nucleic acid coding sequences are the subject of and are claimed in a Chinese provisional patent application No. 202110950740.1, filed on 18 August 2021 and titled ‘Anti-PTK7 Nanobody and Coding Sequence and Use Thereof’; and
(d) the Anti-PD-L1 Nanobody and its nucleic acid coding sequences are the subject of, and are claimed in, a patent application in each of China and Europe both deriving from PCT application No. PCT/CN2017/077122, filed on 17 March 2017 and titled ‘Anti-PD-L1 Nanobody and Coding Sequence and Use Thereof’ and in a US Patent granted on 11 February 2020,
RAD subsequently obtained outright ownership of 3 of these.
https://assets.website-files.com/61947d47ec3d405195f23d06/61ede039d62fefcf133f57eb_RAD Acquires IP Ownership of Radiopharmaceutical Nanobodies.pdf
However, Pivalate is the invention of Prof Eric Aboagye of Imperial College London.
https://assets.website-files.com/61947d47ec3d405195f23d06/634e15c99b0c00c878e0e430_Pivalate achieves positive Phase 2 data in brain mets trial 18 Oct 2022.pdf
View attachment 19662
Prof Aboagye has several patent applications which did not progress to grant, but this one did:
US10201625B2 Radiolabelled octreotate analogues as PET tracers
Like PAB, Pivalate and the other antibodies can be conjugated with other chemicals to form X-RAY (PET) targets, as well as therapeutic elements.
View attachment 19665
It seems Prof Aboagye has been running the clinical trials.
https://assets.website-files.com/61947d47ec3d405195f23d06/632a67763783ec4e604698db_Pivalate Phase II Data to be Presented at October Conference in Barcelona 21 Sep 2022.pdf
View attachment 19668
View attachment 19669
View attachment 19667
It would be interesting to know enough about the science to make meaningful comparisons between, eg, IMU's or PAB's treatments and these therapies.