International Research Network - SMO and Home Care Services provider

International Research Network is an SMO and a Home Care Services provider. By utilizing our extensive expertise and our large alliance clinical trial research site network in Europe and North America, we are providing our clients with solutions for expedited patient recruitment and highest quality study delivery.

Our offering – Site management services to pharmaceutical companies and CROs to reduce Study timelines and costs and as an outcome lead to more efficient and accurate trial results.

Our SMO teams keep patients engaged with high retention rates and provide our clients with tailored services to reach the right population.


IRN is the fastest growing Site Alliance Network in Eastern and Central Europe, build on 25 years experience in clinical research.



- Top recruiter status for > 60 clinical multicenter trials
- Ensuring activation of all sites on average within 30 days of approval
- Consistent achievement of DBL within less than 4 weeks from LPLV
- 95% of the recruitment targets reached on time

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Audits / Inspections

- more than 50 audits/inspections
- 3 FDA inspected sites, NAI letters

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Therapeutic areas

We are proud to be able to bring a depth of knowledge to our clients’ studies based on experience across a wide range of therapeutic areas. Our clinical trial experience enables us to work with our clients at any stage of drug development from Phase I through Phase IV for traditional as well as highly innovative clinical programs.
The listed number of trials is a provisional representation of our experience. For case studies and more detailed information about our track record of experience in clinical research, please contact our business development department:

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Benefits of SMO

- Shorter study timelines, lower costs and elevated quality metrics.
- Faster patient recruitment
- Improved data and query management
- Better focus for research teams and decreased burden for the PI
- Audit Readiness from Start to the End of the Clinical Trial

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Site Network

IRN was established to address the high need for patient sourcing techniques and having behind Comac Medical’s 25 years of experience, rapidly became the fastest growing Patient-Centered Site Alliance Network in Eastern and Central Europe.

Since its establishment the company already operates in more than 700 partnering institutions, with more that 2000 partnering investigators, in 18 countries in Central and Eastern Europe and North America, with access to more than 8 million patients on file.

The headquarter is located in Sofia, Bulgaria. IRN has also offices and it’s own trained and experienced local staff in Albania, Bosnia & Herzegovina, Bulgaria, Croatia, Czech R., Georgia, Greece, Hungary, Latvia, Lithuania, Moldova, N. Macedonia, Poland, Romania, Serbia, Slovakia, Slovenia, Turkey and North America.

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Services Provided By IRN

Feasibility & Site selection

Conducting clinical trials is inherently complex, and engaging ...

Study management

Our Clinical Site Managers will support your trial ...

Site Augmentation

Our unique study delivery model to support Sponsors ...

Home Care Services

With clinical trial nurses and physicians covering CEE, ...

Regulatory consulting

Full strategic and operational support from our Regulatory ...

Patient recruitment & retention activities

With our patient-centric approach of work we help ...


partnering institutions


partnering investigators


million patients on file


countries in Europe and North America


completed clinical trials

What Is New At IRN

August 14, 2020

IRN has signed a Master Service Agreement with one of the biggest private networks of hospitals in Poland.

IRN has signed MSA with one of the biggest private owners of healthcare institutions in Poland with more ...
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August 14, 2020

One of the IRN alliance sites became Hospital of the Year for 2017 in Bulgaria

University Hospital “Virgin Mary” is one  of the bigest and well  equipped private hospitals in  Bulgaria. It has ...
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