The effects of the PDF4 inhibitor roflamulast on cognitive performance after a cerebrovascular accident : A double-blind randomized placebo-controlled trial with an open label extension (ROSTMEMA).

June 2, 2026

Background Effective pharmacological treatments for Post-Stroke Cognitive Impairment (PSCI) remain elusive. Preclinical studies have shown that phosphodiesterase 4 (PDE4) inhibition improved cognition, particularly memory, in post-stroke animal models and in healthy young and elderly individuals. This study tested whether the PDE4 inhibitor roflumilast could improve memory in PSCI patients. Methods A double-blind randomized placebo-controlled trial

Type: Scientific article

Authors: Jill Kerckhoffs, Ike Winkers, Arthur Ooghe, Samuel Branders, Jos Prickaerts, Arjan Blokland.

Date: April 24, 2026

Placebo response modelled by psychological characteristics in a remote osteoarthritis trial

March 18, 2026

Background Accurately characterizing placebo response is essential for improving sensitivity in osteoarthritis (OA) trials. This analysis investigates how baseline patient characteristics and psychological factors – leveraged through historical data models – contribute to placebo response. It is based on the ATLAS study, an online, double-blind, randomized, placebo-controlled study that assesses the efficacy and safety of

Type: Scientific Poster

Authors: Jérôme Paul , Samuel Branders , Simone Collins , Karen Bracken, Nicolas Xaborov, Frédéric Clermont, Alvaro Pereira, David Hunter.

Date: April 23, 2026

Conference: OARSI 2026

Analyzing Neuropathic Pain Subjects in Acute Low Back Pain Using an NPSI-Based Stratification Algorithm and PainDETECT Measurement

September 26, 2025

Background & Aims RCTs in neuropathic pain (NeP) are challenged by the high inter-individual variability in treatment response, reflecting the diverse underlying mechanisms of pain. While the Neuropathic Pain Symptom Inventory (NPSI) has previously delineated three pain clusters (Bouhassira et al 2021): pinpointed pain (paresthesia/dysesthesia), evoked pain (stimulus-induced pain), and deep pain (spontaneous pressing pain),

Type: Scientific Poster

Authors: Alvaro Pereira, Arthur Ooghe, Jérôme Paul, Dmitri Lissin Cognivia, R&D, Mont-Saint-Guibert, Belgium, Scilex Holding Company, R&D, Palo Alto, United States

Date: September 4, 2025

Conference: Neupsig 2025

ARE SITE DIFFERENCES DRIVING OUTCOMES? THE CENTRAL ROLE OF EXPECTATIONS IN OA RCTS.

June 24, 2025

Purpose Disparities among sites are frequently observed in the results of Randomized Controlled Trials (RCTs).  As a result, adjusting for site effects is a common strategy in RCT analyses to account for these disparities. However, such adjustments introduce additional parameters into the analysis, which can be especially detrimental in Osteoarthritis (OA ), with an average number

Type: Scientific Poster

Date: April 24, 2025

Conference: OARSI 2025

From Chronic to Acute Pain: Evaluating the baseline prognostic covariates in Severe Acute Lower Back Pain

May 15, 2025

The FDA’s 2023 guidance on baseline covariate adjustment highlights the importance of incorporating prognostic covariates into randomized clinical trials (RCTs) efficacy analyses. Adjusting for such covariates can reduce variability in treatment effect estimates, leading to narrower confidence intervals and more powerful hypothesis testing. In line with this guidance, Placebell baseline prognostic covariates were developed for

Type: Scientific Poster

Authors: Samuel Branders, Arthur Ooghe, Jérôme Paul, Dmitri Lissin, Dominique Demolle, Alvaro Pereira

Date: May 1, 2025

Conference: United States Association for the Study of Pain 2025

Predicting drop-out in early-stage Type 1 Diabetes clinical trials to improve retention through Personalized Engagement Strategies

March 27, 2025

Background: Patient non-adherence and drop-out increase the time and cost of clinical trials. A tool that predicts, at baseline, which patients are at risk of dropping out could enhance trial management through personalized engagement strategies. Understanding patient profiles and behaviors is essential for this. Our goal was to develop a machine learning-based model to predict

Type: Scientific Poster

Authors: A. Ooghe, J. Van Rampelbergh, S. Branders, N. Xaborov, J. Paul, D. Demolle, A. Pereira

Date: March 19, 2025

Conference: Advanced Technologies & Treatments for Diabetes 2025