17-19 January 2024 | Hybrid | Athens, Greece

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The 1st Gravitate Health Hackathon is now rescheduled and will take place on January 17-19, 2024, in a hybrid format, with on-site participation and opportunities for participants to attend virtually.
Join us in Athens, Greece, if you want to participate in-person!

We are excited to announce that the Hackathon is being held within the ‘Athens Digital Health Week’ conferences that will take place between the 15th and 19th January in the centre of Athens.

Participation in the Hackathon is free of charge; registration is required to book your place.


The Gravitate Health project, now in its third year, has already developed a federated open-source platform (FOSP) that is currently still in development. The goal of Gravitate Health is to empower and equip Europeans with health information for active personal health management and adherence to treatment.

The Hackathon provides a great opportunity to showcase the platform and invite participants to test its usability or build on it and contribute to its improvement. Constructive feedback will be valuable to the FOSP’s further development to serve its goals and new ideas may speed up its development.

The ePI (electronic product information), interoperability, and the FHIR standard are in the center of development of the FOSP, one of the main outputs of Gravitate Health.

Among the aims of the project is also to stimulate public-private partnerships to:

(i) Create market-specific applications which can accommodate specific needs of national or local ecosystems.

(ii) Build commercial solutions to serve specific disease areas and add value to the platform.


The Hackathon is held within the ‘Athens Digital Health Week’ conferences as a hybrid event, at the Royal Olympic Hotel in the heart of Athens close to the Acropolis.

‘Athens Digital Health Week’ comprises several parallel events where experts on digital health gather in Athens from around the world to share knowledge and practices with the goal to further advance eHealth in Europe (HL7 Europe working group meetings, HL7 Hellas Digital Day, HL7 Europe Affiliate meeting, IHE Europe and IHE Catalyst meetings, EU projects networking events, 1st Gravitate Health Hackathon).

Remote participation to the Hackathon is open and we encourage individuals to join online or even teams to form in remote locations and connect to the event in Athens.


Three prizes will be awarded to the Hackathon’s winning Teams:

1ST Prize

Details will be announced soon.

2nd Prize

Details will be announced soon.

3rd Prize

Details will be announced soon.

In the context of Gravitate Health project, one of the most prominent objectives is to provide patients with the information they need about their medications. However, this information needs to be adapted to the context and preferences of the end-user to achieve effective and optimal understanding.
CHALLENGE 1: ePI Preprocessing

Create electronic product information (ePI) preprocessing modules which―given a FHIR format ePI―will automatically add annotations to the content, keeping it in FHIR format.

ePI preprocessing modules do not need to address all annotations, they may focus on specific knowledge; ePI preprocessors may be stacked, i.e., executed sequentially, to generate a complete annotation of the ePI.

The annotation will employ standard terminologies such as SNOMED-CT, LOINC, ICD 10, ICPC-2, as well as International Patient Summaries (IPS’s). Automatic preprocessors are preferred since they will better address the scalability challenge of annotating thousands of ePIs. 

CHALLENGE 2: Gravitate Health Lens (G-lens) development

Develop G-lenses using:

(1) the Gravitate Health FOSPS*,

(2) ePIs with embedded semantic annotations (using standard terminologies such as SNOMED-CT, LOINC, ICD 10, iCPC-2),

(3) a persona vector i.e., the information relevant to the patient’s health in an International Patient Summary-IPS, and

(4) the patient’s current context and preferences, create a lens that effectively and optimally adapts the content to preferences and context to provide the patient with relevant information about his/her medicines.

*FOSPS: federated open-source platform services

Note that:
  1. i) A theoretical model may also be accepted as a solution.
  2. ii) All personas created within Gravitate Health project will be available for the Hackathon.

Read the detailed descriptions here:

Oct 16: Registration Opens
Dec 11–15: Formation of Teams Starts
Jan 17: Hackathon starts Wednesday afternoon
Jan 18: Hackathon in progress
Jan 19: Hackathon ends Friday afternoon

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Supported by a grant from IMI
This project has received funding from the Innovative Medicines Initiative 2 Joint Undertaking (JU) under grant agreement No 945334. The JU receives support from the European Union’s Horizon 2020 research and innovation programme, the European Federation of Pharmaceutical Industries and Associations [EFPIA], and Datapharm Limited. The total budget is 18.5M€ for a project duration of 60 months.

Information on this website reflects Project owner’s views and neither IMI nor the European Union, EFPIA, or or Datapharm Limited are liable for any use that may be made of the information contained herein.