The 22nd Annual ECNP-OCRN-ICOCS Scientific Meeting will be taking place this year on Wednesday October 14th, 2026 at the Conference Center Kolpinghaus Munich Central GmbH (Adolf-Kolping-Str.1, 80336 München) in Munich, Germany with the option to attend virtually.

Registration is required to attend the meeting. Registration is free for paid up ICOCS members. To register, please do so through the online form: https://forms.gle/DLNiTL18Sc5zJKV8A

Poster Abstract Submissions: The college also invites attendees to submit abstracts for posters to be presented at the meeting. The deadline to receive poster abstract submissions is September 16th, 2026. Please note, posters will only be posted onsite at the meeting.

We are also delighted to introduce the Prof. Dan J. Stein Memorial Award, established in his memory to honour his outstanding contributions to the ICOCS and the greater OCD community. The Award provides up to £1,000 to one successful applicant to support their attendance at the Scientific Meeting and presentation of a poster. 

Submit an abstract for posters and/or apply for the Prof. Dan J. Stein Memorial Award, through the following application form: https://forms.gle/QUztQCWzc5YC9QmG9

3 June 2026 | 3:30 PM – 6:30 PM (BST)
The Memoir Club, 12 Upper Woburn Place, Euston, London
Hybrid Meeting

The ICOCS-OCRN Delphi OCD Meeting will take place on 3 June 2026 in London and online.

The meeting will focus on the ICOCS Delphi Project, an important initiative that has been shaped by the expertise, collaboration, and commitment of colleagues. The project aims to address one of the ongoing challenges in the OCD field: the absence of clear, standardized definitions for response, remission, and relapse in OCD.

The lack of consistency in how these terms are defined and applied has contributed to variability across the scientific literature, making it more difficult to compare studies, draw robust conclusions, and translate findings into clinical practice. To address this challenge, the ICOCS has developed a Delphi project designed to establish consensus definitions for these key terms.

This meeting will provide an opportunity to review progress to date, discuss the findings from the Delphi process, and consider the next steps toward achieving greater consistency in OCD research and clinical care.

The 21st Annual ECNP-OCRN-ICOCS Scientific Meeting will be taking place this year on Friday October 10th, 2025. The meeting will take place in person at Hotel Casa in Amsterdam, The Netherlands.

Registration is required to attend the meeting. Registration is free for paid up ICOCS members. To register, please email office.icocs@gmail.com

Poster Abstract Submissions: The college also invites attendees to submit abstracts for posters to be presented at the meeting. The deadline to receive poster abstract submissions is September 28th, 2025. Please note, this year posters will only be posted onsite at the meeting.

Abstract Guidelines

Meeting Program

We’re pleased to announce our upcoming virtual meeting in collaboration with Orchard OCD, taking place on:

Saturday, June 28, 2025, from 9:00 AM to 1:00 PM (BST) / 4:00 AM to 8:00 AM (EDT).

This session will highlight some exciting new initiatives from both ICOCS and Orchard OCD College! 

Registration will be free for paid-up ICOCS members.
If you are not currently a member but would like to attend, we encourage you to apply here

On December 9, 2024, the ICOCS convened a hybrid meeting during the ACNP Annual Meeting at the JW Marriott Desert Ridge Resort in Phoenix, Arizona. The session focused on early identification of individuals at risk for OCD and featured a video presentation on the CODIFY Grant application led by Dr. Naomi Fineberg. The discussion also included brainstorming on funding mechanisms, collaborative initiatives, and new technologies for high-risk assessments, with contributions from Drs. Eric Hollander, Daniel Geller, and Michael Van Ameringen.

Registration is now open for the 20th Annual ECNP-OCRN-ICOCS Scientific Meeting. The topics covered during this year’s meeting will include; new immunological theories and mechanisms and treatment resistance in OCD.  The meeting will take place in Milan, Italy, as well as virtually over Zoom, on Wednesday, September 25, 2024 from 9:00 am-4:00 pm CEST.

Registration is free for paid-up ICOCS and OCRN members. To register, please email office@icocs.org and specify if you are attending in person or virtually.

If you are not currently an ICOCS member, but would like to attend the meeting, we encourage you to apply for ICOCS membership: https://icocs.org/join-us/registration-form/

Please see below for more program details.

The ICOCS-OCRN Meeting: Next Generation Treatments for Obsessive Compulsive and Related Disorders was held in New York City at the Albert Einstein College of Medicine on May 6th 2024. This meeting was a hybrid event, hosting 81 virtual participants in addition to our in-person attendees!

The main focus of the meeting was to highlight the latest cutting edge treatments for Obsessive Compulsive and Related Disorders. 

First, we heard from Dr. Christopher Pittenger (MD PhD Yale School of Medicine, New Haven, Connecticut) who gave a talk on emerging experimental evidence, including his own work, showing that psilocybin holds promise of acute efficacy in OCD. Dr. Carolyn Rodriguez (MD PhD Stanford Medicine, California) critically reviewed the mixed results for Intravenous Ketamine, a NMDA receptor glutamate antagonist in OCD, including her own groundbreaking randomised controlled trials which showed evidence of rapid yet relatively short-lived efficacy. Dr. Eric Hollander (MD Albert Einstein College of Medicine, Bronx, New York) moved on to review some new work from a series of open label cases which showed promising findings for Intranasal Esketamine, the purportedly more active enantiomer, in a mixed group of depressed patients with comorbid OCD symptoms including some with treatment-resistant OCD. Dr. Michael Van Ameringen (MD McMaster University, Hamilton, Ontario) reviewed the existing and mixed evidence on the effects of cannabinoids, including THC and cannabidiol in OCD. Their presentations were followed by stimulating talk by Marc Summers, who shared a moving presentation describing his personal lived experience of a lifetime of OCD, which he is currently running as a highly successful one man play off Broadway – The life and slimes of Marc Summers. Marc pressed home on not only the impact of OCD, alluding to its corrosive effect on mood, highly familial nature and how so many people suffer in silence, but also, some of the positives associated with obsessive-compulsive behaviours including, but not limited to, persistence. Next, Dr. Humberto Nicolini (MD PhD National Institute of Mental Health, Mexico) presented compelling evidence from a large epidemiological and genetic study in Mexico which indicated that polygenic risk scores for cannabis use overlap strongly with polygenic risk scores (PRS) for psychosis and suggested that people with OCD at increased genetic risk for cannabis use might have increased actual risk of cannabis use and an associated development of psychosis. Casara Jean Ferretti (MS MA PhD Candidate Albert Einstein College of Medicine, Bronx, New York) shared details on a possible role for glucagon-like peptide-1 (GLP-1) agonists in treating obesity, impulsive and compulsive behaviours in obsessive compulsive and related disorders. Finally, Dr. Bernardo Dell’Osso (MD University of Milan, Italy) shared the details of an upcoming joint initiative of the ICOCS and OCRN – Training Masterclass: Obsessive Compulsive Spectrum Disorders, from translational models to clinical management – our first training masterclass in OCD, a virtual webinar to be held in Taormina, Italy from June 19th-23rd! Further details of this upcoming initiative can be found here. As the meeting approached its end, Naomi Fineberg (MBBS, MA, MRCPsych University of Hertfordshire) and David Nutt (DM, FRCP, FRPsych, FSB, FMedSci Kings College, London) shared the stage as they most gracefully brought this meeting to its end, detailing not only a summary of the intriguing talks that took place but also a positive outlook on the future of OCD research and of the potential treatments for patients with OCD. 

The recording of the ICOCS-OCRN Meeting: Next Generation Treatments for Obsessive Compulsive and Related Disorders can be found on our website here.