1. Invited talk at the Distinguished Guest Seminar Series of the Umeå Centre for Microbial Research (UCR), Umeå University, Sweden, May, 2022

2. Organizer and Speaker at the International Cell Senescence Association (ICSA) conference, Athens, September, 2019

3. Organizer and Speaker at the Symposium of the 7th Mediterranean Neuroscience Conference, “Senescence in neural development and neurodegeneration”, Marrakech, Morocco, June, 2019

4. Invited talk at the 6th International Multithematic Bio-Medical Congress (IMBMC), Nicosia, Cyprus, November, 2018

5. Invited talk at the International Cell Senescence Association (ICSA) conference, Montreal, Canada, July, 2018

6. Invited talk at the "4th Mancunian Skin Club (MSC) Annual International Workshop", Manchester, UK, May, 2018

7. Invited talk at the ESTRO 37 symposium on ‘Radiation induced senescence’, Barcelona, Spain, April, 2018

8. Invited talk at the IUBMB Meeting “Molecular aspects of aging& longevity”, Athens, Greece, November, 2017

9. Invited seminar at the IRB, Barcelona, Spain, October, 2017

10. Invited talk at the EMBO Conference “The DNA damage response in cell physiology and disease”, Cape Sounio, Greece, October, 2017

11. Invited seminar at CMB/LICR Seminars, Karolinska Institutet, Stockholm, Sweden, November, 2015

12. Invited seminar at Uppsala University, Sweden, November, 2015

13. Invited seminar at Weizmann Institute, Israel, May, 2015

14. Invited seminar at Hebrew University, Ein Kerem, Jerusalem, Israel, May, 2015

15. Invited seminar at Hebrew University, Givat Ram, Jerusalem, Israel, May, 2015

16. Invited seminar at Tel Aviv University, Israel, May, 2015 

17. Organizer and Speaker at the International workshop on: “Oncogenic Pathways and Antitumor Responses”, Athens April, 2014

18. 23rd Biennial Congress of the European Association for Cancer Research (EACR) “From Basic Research to Personalised Cancer Treatment”, Munich, Germany, July, 2014

19. Invited seminar at BRIC, Copenhagen BioCenter, Denmark, March, 2014 

20. Invited talk at the EMBO Conference “The DNA damage response in cell physiology and disease”, Cape Sounio, Greece, October, 2013

21. Organizer and Speaker at the International workshop on: “Ageing and Cancer Cell Biology: Convergent and divergent   molecular mechanisms”, Athens, Greece, July, 2013

22. Invited talk at the International workshop on “Ageing and cancer cell biology: Convergent and divergent molecular mechanisms”, Athens, July, 2013

23. Invited seminar at University of Geneva, December, 2013 

24. Chairman and speaker at the Cold Spring Harbor Laboratory meeting Special Session “Eukaryotic DNA Replication & Genome Maintenance”, Cold Spring Harbor Laboratory, USA, September, 2013

25. Invited lecture at the TransMedRi project, University of Rijeka Faculty of Medicine, Rijeka, Croatia, May, 2013

26. Organizer and Speaker at the EMBO Workshop, “Chromosome Structure, Damage & Repair”, Cape Sounio Hotel, Athens, Greece, September, 2011

27. Invited seminar at the Gray Institute for Radiation Oncology & Biology 2010 Seminar Series, Oxford University, UK, November, 2010

28. Organizer and Speaker at the 1st International Conference on Molecular Cancer Research, Royal Olympic Hotel, Athens, November 2009

29. Organizer and Speaker at the 2nd Genomic Instability Workshop, GENICA FP7 Health Programme, Athens, May, 2009

30. Invited seminar at IFOM-IEO, Milan, Italy, October 2008 

31. Invited talk at the EMBO Workshop “Molecular mechanisms of cell cycle control in normal and malignant cells”, Spetses island, Greece, October, 2007

32. Invited lecture at the 34th Annual Meeting of the European Society for Radiation Biology (ESRB) and the Annual Scientific Meeting of the Association for Radiation Research (ARR), Leicester, UK, September, 2005