ANZCTR: Australia & NZ Clinical Trials Registry

ANZCTR (Australian New Zealand Clinical Trials Registry)

The Australian New Zealand Clinical Trials Registry (ANZCTR) is the primary online registry for clinical trials conducted in Australia and New Zealand, distinguished from clinical trial registration generally by being the specific bi-national system, housed and managed by the NHMRC Clinical Trials Centre at the University of Sydney since 2005, that assigns every registered study a unique ACTRN (Australian Clinical Trial Registration Number) and was, in 2007, one of the first three registries the World Health Organization recognized as a Primary Registry under its International Clinical Trials Registry Platform (WHO ICTRP).

ByCASRAI Editorial Board

· Last updated 3 Aug 2026

Ask about ANZCTR (Australian New Zealand Clinical Trials Registry)

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Examples

Worked examples

Is an instance
An investigator-initiated Phase 3 trial run across sites in Sydney and Auckland registers with ANZCTR before enrolling its first participant, receiving an ACTRN in the format ACTRN12621000000000, so the trial satisfies both the National Statement's registration requirement and, if the sponsor later seeks Medicare Benefits Schedule reimbursement for trial-related services, the MBS registration condition.
Is an instance
A manuscript reporting an Australian-run randomized controlled trial cites its ACTRN in the methods section so ICMJE-following journal editors can confirm the trial was registered prospectively, in the same way a US-based trial would cite an NCT number from ClinicalTrials.gov.

Counter-examples

Looks similar, but isn't

Not an instance
A trial run only at sites in the United States and registered solely on ClinicalTrials.gov is not registered with ANZCTR and does not need to be — the two registries are separate national/regional Primary Registries within the WHO ICTRP network, not competing options for the same trial; a genuinely multi-country trial with Australian or New Zealand sites, however, may register with either (or, less commonly, both).
Not an instance
TGA approval of a therapeutic good for use in a trial is a separate regulatory step from ANZCTR registration — the TGA governs whether an unapproved drug or device may lawfully be supplied for trial use in Australia, while ANZCTR is a public disclosure registry with no approval authority; a trial can be registered on ANZCTR without yet having, or ever needing, TGA approval, and vice versa.

Machine-readable encodings

Use in your systems

JATS XML <role> element

xml

<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="ANZCTR (Australian New Zealand Clinical Trials Registry)"
      vocab-term-identifier="https://casrai.org/dictionary/term/anzctr-australian-new-zealand-clinical-trials-registry" />

Schema.org DefinedTerm (JSON-LD)

json

{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "@id": "https://casrai.org/dictionary/term/anzctr-australian-new-zealand-clinical-trials-registry",
  "name": "ANZCTR (Australian New Zealand Clinical Trials Registry)",
  "identifier": "https://casrai.org/dictionary/term/anzctr-australian-new-zealand-clinical-trials-registry",
  "description": "The Australian New Zealand Clinical Trials Registry (ANZCTR) is the primary online registry for clinical trials conducted in Australia and New Zealand, distinguished from clinical trial registration generally by being the specific bi-national system, housed and managed by the NHMRC Clinical Trials Centre at the University of Sydney since 2005, that assigns every registered study a unique ACTRN (Australian Clinical Trial Registration Number) and was, in 2007, one of the first three registries the World Health Organization recognized as a Primary Registry under its International Clinical Trials Registry Platform (WHO ICTRP).",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/clinical-research#set",
  "url": "https://casrai.org/dictionary/term/anzctr-australian-new-zealand-clinical-trials-registry",
  "sameAs": [],
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "publisher": {
    "@id": "https://casrai.org/#organization"
  },
  "dateModified": "2026-08-03T22:22:09",
  "inLanguage": "en"
}