Austria Limited-Capacity and Legal Representative Consent Requirements

When the legal-representative pathway applies

Article 31 of Regulation (EU) No 536/2014 applies to incapacitated subjects who did not give or refuse informed consent before the onset of incapacity. It requires informed consent from the legally designated representative and participant information that is adapted to the participant's capacity to understand.

The pathway is not a general shortcut for difficult consent situations. The trial must meet the Article 31 conditions, including scientific necessity for research in the incapacitated population and the required benefit, risk and burden criteria.

Austria adds a national condition for the Article 31 population-benefit pathway. Section 39 of the Austrian Medicines Act states that such a trial may proceed only where there are no indications that the participant refused participation in this kind of trial before losing decision-making capacity.

Documents to prepare

Mandatory. Submit a separate information and consent form for the adult's legally designated representative. AustrianEthics explicitly requires this when participants unable to provide informed consent will be included.

Mandatory as applicable. Provide information to the participant in a form suited to their capacity to understand and involve the participant in the consent process as far as possible. Do not direct all participant-facing communication solely to the representative if the participant can understand part of the decision.

Mandatory for temporary incapacity. Submit an additional post-hoc information and consent form. AustrianEthics states that this document must be given to participants once they regain the ability to provide informed consent.

All participant-facing documents used in Austria are German. Certified translations are required when a planned participant or representative does not sufficiently understand German.

Legal representative consent and participant involvement

The legal representative receives the information required for informed consent and signs the relevant consent document. The participant should receive information adapted to their capacity and should participate in the process as far as possible.

Article 31 requires the investigator to respect the explicit wish of an incapacitated participant who can form an opinion and assess the information to refuse participation or withdraw at any time. Representative consent does not override that expression.

Do not describe the participant's involvement as optional. The consent package should show how the participant is informed, how their wishes are assessed and how refusal is handled.

Re-consent when capacity returns

Mandatory for the Austrian temporary-incapacity pathway. Once the participant regains decision-making capacity, provide the post-hoc information and consent document and obtain the participant's own decision for continued participation.

The post-hoc document should explain what occurred while the participant lacked capacity, what continuing procedures are proposed, the right to refuse continued participation and how data already collected are handled under the applicable legal framework.

For emergency trials, use the more specific Austria emergency enrollment consent guide, which combines Article 35 conditions with Austria's post-hoc document requirement.

Objection, refusal and withdrawal

Mandatory. Respect a participant's explicit refusal or withdrawal if they can form and communicate an opinion. Record the decision in the trial records and stop procedures that depend on continuing participation.

AustrianEthics Guidance Version 4 states that after full withdrawal, new study-purpose data collection through study visits, follow-up visits or re-contact should not continue. CTR safety-reporting obligations remain unaffected.

Austria-specific exclusions for certain groups

Austria uses additional national protections allowed by the CTR. Section 39 of the Austrian Medicines Act prohibits clinical trials in persons performing compulsory military service and in persons detained by judicial or administrative order or placed under the Austrian Accommodation Act.

These exclusions are separate from lack of decision-making capacity. Do not assume that obtaining legal-representative consent makes one of these prohibited groups eligible.

Signature and contact requirements

The representative consent follows the Austrian ICF framework. The Austrian national requirements portal states that informed consent uses wet ink or qualified electronic signature. The person conducting the consent interview also signs and dates the consent record under Article 29.

Use the standard Austrian contact-information structure, including the site and investigator contacts, 24-hour emergency number, site data-protection officer, patient advocacy and national insurance contact. The mandatory national insurance and data-protection wording also remains applicable.