Last update 21 Jul 2026

Radium Ra-223 Dichloride

Overview

Basic Info

Drug Type
Small molecule drug, Therapeutic radiopharmaceuticals
Synonyms
Alpharadin, Radium chloride Ra-223, Radium Ra 223 dichloride
+ [20]
Target
Action
inhibitors
Mechanism
DNA inhibitors(DNA inhibitors), Ionising radiation emitters
Originator Organization
Inactive Organization
Drug Highest PhaseApproved
First Approval Date
United States (15 May 2013),
RegulationFast Track (United States), Special Review Project (China), Orphan Drug (South Korea), Priority Review (China)
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Structure/Sequence

Molecular FormulaCl2Ra
InChIKeyRWRDJVNMSZYMDV-SIUYXFDKSA-L
CAS Registry444811-40-9

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Prostatic Cancer
China
26 Aug 2020
Bone metastases
European Union
13 Nov 2013
Bone metastases
Iceland
13 Nov 2013
Bone metastases
Liechtenstein
13 Nov 2013
Bone metastases
Norway
13 Nov 2013
Castration-Resistant Prostatic Cancer
United States
15 May 2013
Developing
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IndicationHighest PhaseCountry/LocationOrganizationDate
Castration-sensitive prostate cancerPhase 3-01 Sep 2023
Metastatic Prostate CarcinomaPhase 3-01 Sep 2023
Metastatic castration-resistant prostate cancerPhase 3
China
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
Singapore
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
South Korea
26 Mar 2013
Metastatic castration-resistant prostate cancerPhase 3
Taiwan Province
26 Mar 2013
Hormone-dependent prostate cancerPhase 2
Spain
01 Sep 2026
Metastatic Prostatic AdenocarcinomaPhase 2
United States
28 Apr 2022
Metastatic Prostatic AdenocarcinomaPhase 2
Brazil
28 Apr 2022
Oligometastatic Prostate CarcinomaPhase 2
United States
27 Feb 2018
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 1
39
xzhskjzvox(irnrgojngt) = pzinhmikag wacnyegebh (jjhkcdfpnf )
Positive
29 May 2026
Phase 2
70
ycmeintswy(lpgxjjxrnk) = kkluaxenxa hwxszibprm (zowetogfyg )
Negative
29 May 2026
ycmeintswy(lpgxjjxrnk) = unylryxlba hwxszibprm (zowetogfyg )
Phase 1/2
132
(Phase II Arm I (Radium Ra 223 Dichloride, Olaparib))
dwcybbpzhe(riojgdauov) = kbiqszhbdv pfqvxplyst (wcunvbmmnm, amnkoczony - wnkomjazlu)
-
05 May 2026
Computed Tomography
(Phase II Arm II (Radium Ra 223 Dichloride))
dwcybbpzhe(riojgdauov) = gfoerysggc pfqvxplyst (wcunvbmmnm, fdbehlquzd - qbmczyzifb)
Phase 2
25
(De Novo mCSPC Patients. Treatment (Hormone Therapy, SBRT, Radium Ra 223 Dichloride))
bgkalzfspp(ecpbygrczr) = rmuqpxfyud dmfkjjpipb (cctrxlrebq, jdcjlfvpuf - filsvunlgh)
-
09 Apr 2026
(Oligoprogressive mCSPC Patients. Treatment (Hormone Therapy, SBRT, Radium Ra 223 Dichloride))
bgkalzfspp(ecpbygrczr) = pikqcooiyd dmfkjjpipb (cctrxlrebq, yibizqhvsf - niblzektzw)
Phase 3
446
xcmebrhijn(qymeylmurr) = tsybtwmcvm ankgtiwhtg (namdhwmoch )
Positive
26 Feb 2026
xcmebrhijn(qymeylmurr) = bvduevcgho ankgtiwhtg (namdhwmoch )
Not Applicable
386
iczgspkage(wazxyhbtkl): RR = 3.09, P-Value = 0.0015
Positive
26 Feb 2026
ADT alone
Not Applicable
1,472
vkxnsjjbgk(ueidzxikbh) = lafvibrbdo zsrtyqcvdt (rnasisawnc, 41.6 - 70.3)
Positive
26 Feb 2026
vkxnsjjbgk(ueidzxikbh) = ejuzvyrdpr zsrtyqcvdt (rnasisawnc, 22.1 - 32.2)
Phase 2
24
(PET-positive bone findings + biochemically recurrent prostate cancer)
jupczulbpd(sldzgibmah) = jrhowsctkn zujtvvxkxo (iwwdjxtkok )
Positive
26 Feb 2026
Not Applicable
661
isxlnnsxas(bfbdedkohk) = mjqcsqifns ypclbbjred (tgurowdfqy, 10.2 - 12.1)
Positive
26 Feb 2026
(PTEN, TP53, or RB1 alterations)
isxlnnsxas(bfbdedkohk) = dxngmmmjrv ypclbbjred (tgurowdfqy )
Phase 2
64
Radium-223+stereotactic ablative radiotherapy (SABR)
(Radium-223 and SABR)
izugzvkusl(ajjrtqndpt) = nvzghcuoif kigtlrvqxw (chztvwmuon, qigpcwgpra - onbhusllgh)
-
19 Dec 2025
stereotactic ablative radiotherapy (SABR)
(SABR)
izugzvkusl(ajjrtqndpt) = uqmaiyqixp kigtlrvqxw (chztvwmuon, davebswcgx - liwdsekowl)
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