1. Home
  2. Clinic services
  3. Phase II–IV clinical trials
Clinic services

Phase II, III and IV clinical trials

Phases II–IV are conducted in patients. Phase II finds the dosing regimen and assesses efficacy, Phase III confirms efficacy and safety in a broad group, and Phase IV follows the medicine after registration. The clinic takes part in multicentre and international studies.

Updated: 20 October 2026

Phases II and III

The clinical centre conducts multicentre international Phase II and III studies. Phase II studies determine the dosing regimen, the dose and the efficacy of a medicine in a specific disease: the medicine is compared with placebo or with standard treatment. In Phase III, it is studied in a broader group of patients to confirm efficacy, tolerability and safety before registration.

What matters to sponsors and contract research organisations (CROs):

  • Our staff work with electronic data capture systems (experience with leading electronic systems and databases), so they join a project more quickly.
  • Strict adherence to procedures and timely documentation are the basis for meeting obligations to the client.
  • We estimate realistic patient enrolment rates in advance, at the feasibility assessment stage.

Phase IV

Phase IV takes place after a medicine is registered. It collects additional data on safety and on interactions with other medicines, and follows therapy in routine practice. The centre has experience of observational post-marketing studies at its own site. A standard of timely documentation helps to collect data quickly and to respond promptly to queries.

Medical fields

The clinic conducts studies of medicines for various medical fields; for details, see the Experience page.

How to start

Send us a synopsis or protocol. We will check the inclusion criteria, procedures and enrolment rate, then prepare a budget and a schedule. Send us a request or call us.

Questions and answers

How do Phases II, III and IV differ?

Phase II finds the dosing regimen and assesses efficacy in patients with a specific disease. Phase III confirms efficacy, tolerability and safety in a broad group of patients. Phase IV is a study after the medicine is registered: it collects additional data on safety and on interactions with other medicines.

See also

Let us discuss your study

Tell us about the protocol and timelines — we will assess feasibility and prepare a quote.