Development↦Management↦Study Documents↦Protocol
What is it? Why is it important?
The protocol is the core document that describes the background, rationale, objective(s), design, statistical method, and safety aspects of a study.
The study protocol lays down “the rules” of the study. The SP-INV, trial statistician, including Site-INV(s) in a multicentre study approve the study protocol.
Prior to implementation, the study protocol must be submitted for approval to:
- The Ethics Committee (EC)
- Swissmedic for risk-category B and C studies
- FOPH for studies on transplantation of human organs, tissues and cells (risk-category C), and for studies with radiation sources that exceed 5 mSv per year for participants (risk-category C)
Once approved, the SP-INV of the study, potential partner(s), study staff, including Site-INV(s) of participating study sites are all required to comply with the protocol specifications.
Changes to a study protocol during study conduct require a protocol amendment. Prior to the implementation of any changes, they must be approved by EC, and if applicable, regulatory authorities (e.g. Swissmedic, international)
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In addition to specifications in the study protocol, researchers must comply with:
- The Declaration of Helsinki
- The Swiss laws (HRA)
- ICH GCP guidelines for ClinO studies
- ISO 14155 for ClinO-MD studies
- ISO 20916 for In-Vitro-Diagnostic Medical Device studies
What do I need to do?
Based on study type (e.g. ClinO, ClinO-MD, Other Clinical studies, non-clinical HRO studies), different protocol requirements exist (e.g. requirements, protocol template, content, responsibilities)
As a SP-INV, select the protocol template applicable to your planes study.
- If unsure what templates to use clarify with EC
- Consult experts able to support you with the write-up of your study protocol (e.g. experienced study staff, statistician responsible for the statistical part of your study, request a protocol review from a local CTU)
- In order to ensure document tracking, establish a document management system from the very start. This will guarantee document identification starting with the first protocol draft of the study.
It is advisable to invest sufficient time in the development of the study protocol. A well thought through protocol will avoid unnecessary amendments as well as unexpected difficulties due to protocol inconsistencies during study conduct
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For the development of the study protocol:
- Analyse the particular medical/public health problem of interest, and include a review of current existing knowledge
- Define a research question(s) that can be answered statistically
- Evaluate the impact study findings would have on public health (i.e. how will findings contribute to disease prevention, and/or contribute to any health improvements of your target population)
- Decide on an appropriate study design. Abstain fromselecting unnecessary complex study designs that only increase required resources and total study costs
- Define what variables are needed for the evaluation of your study (i.e. study outcome / endpoint, predictor- and confounding variables)
- Define required statistical power, and calculate the required sample size (i.e. the required number of participants needed for your study)
Where can I get help?
Your local CTU↧ can support you with experienced staff regarding this topic
Basel, Departement Klinische Forschung, CTU, dkf.unibas.ch
Lugano, Clinical Trials Unit, CTU-EOC, www.ctueoc.ch
Bern, Clinical Trials Unit, CTU, www.ctu.unibe.ch
Geneva, Clinical Research Center, CRC, crc.hug.ch
Lausanne, Clinical Research Center, CRC, www.chuv.ch
St. Gallen, Clinical Trials Unit, CTU, www.kssg.ch
Zürich, Clinical Trials Center, CTC, www.usz.ch
External Links
Swissethics – see in particular
- Broad selection of protocol templates
References
ICH GCP E6(R2) – see in particular guidelines
- 1.44 Protocol definition
- 1.45 Protocol amendment definition
- 6 Clinical trial protocol and protocol amendment(s)
ISO 14155:2020 Medical devices (access liable to costs) - see in particular sections
- 6.4 Clinical Investigational Plan (CIP)
- Annex A CIP
Declaration of Helsinki – see in particular principles
- 21 – 22 Protocol requirements
Swiss Law
ClinO – see in particular articles
- Art. 19, 20, 49, and 61 Categorisation
- Art. 29 Changes
HRO – see in particular article
- Art. 7 Categorisation
- Art. 18 Changes