Related Experiment Video
Updated: May 23, 2026

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis
Published on: July 11, 2013
Risk of serious adverse events associated with biologic and nonbiologic psoriasis systemic therapy: patients
Ignacio Garcia-Doval1, Gregorio Carretero, Francisco Vanaclocha
1Department of Dermatology, Complexo Hospitalario de Pontevedra, SERGAS (Servizo Galego de Saude), Pontevedra, Spain. ignacio.garcia.doval@sergas.es
Objective:
To describe the use of systemic therapy for psoriasis (biologic and nonbiologic [classic] drugs) in patients not adequately represented in randomized controlled trials (RCTs) and the risk of serious adverse events (SAEs) in these patients.
Design:
A registry inception cohort was used.
Setting:
Thirteen dermatology departments in Spain participated.
Patients:
A consecutive sample of patients treated with biologics and a systematic sample of patients treated with classic systemic therapy were evaluated. A total of 1042 patients (2179 person-years) were included.
Exposure:
Inadequate representation in trials was defined as the presence of any of the following factors: elderly age (>70 years); type of psoriasis other than chronic plaque psoriasis; history of infection caused by hepatitis B, hepatitis C, or human immunodeficiency virus; history of cancer (excluding nonmelanoma skin cancer); and chronic renal or hepatic disease.
Main Outcome Measures:
Serious adverse events as defined by the International Conference on Harmonization were evaluated.
Results:
In all, 29.8% of patients receiving systemic therapy for psoriasis would not have been eligible for RCTs. These individuals had an increased risk of SAEs (incidence rate ratio, 2.7; 95% CI, 1.5-4.7). Patients exposed to biologics had an adjusted increased risk of SAEs (incidence rate ratio, 2.3; 95% CI, 1.1-4.8) that was similar in patients eligible and ineligible for RCTs.
Conclusions:
Patients ineligible for RCTs are an important proportion (30%) of those receiving systemic therapy for psoriasis. These patients have a higher risk of SAEs and should be closely monitored. Patients exposed to biologics (whether these patients are eligible for RCTs or ineligible) are susceptible to the same increase in risk of SAEs, but biologics add to a higher baseline risk in patients who are ineligible for RCTs. The risk-benefit ratio in ineligible patients receiving biologics might be different from the ratio in eligible patients.
Insights
Nearly 30% of psoriasis patients receiving systemic therapy are ineligible for clinical trials and face a higher risk of serious adverse events (SAEs). Biologics increase SAE risk in all patients, but particularly in those ineligible for trials.
Area of Science:
- Dermatology
- Clinical Pharmacology
- Public Health
Background:
- Randomized controlled trials (RCTs) often exclude patients with specific comorbidities or demographic factors.
- Systemic therapies for psoriasis, including biologics and classic drugs, are crucial but their safety in underrepresented patient groups requires investigation.
Purpose of the Study:
- To evaluate the use and safety of systemic psoriasis therapies in patients not typically included in randomized controlled trials (RCTs).
- To assess the risk of serious adverse events (SAEs) in these underrepresented patient populations.
Main Methods:
- A registry inception cohort study was conducted across 13 Spanish dermatology departments.
- Included 1042 patients (2179 person-years) receiving biologics or classic systemic therapies.
- Defined ineligibility for RCTs by factors like advanced age, non-plaque psoriasis types, specific infections, cancer history, or chronic organ disease.
Main Results:
- Approximately 29.8% of patients receiving systemic psoriasis therapy were ineligible for RCTs.
- These ineligible patients exhibited a 2.7-fold increased risk of serious adverse events (SAEs).
- Biologic therapy was associated with an increased risk of SAEs (IRR 2.3), irrespective of RCT eligibility, but added to a higher baseline risk in ineligible patients.
Conclusions:
- A significant proportion of patients receiving systemic psoriasis treatment are ineligible for RCTs and face a heightened risk of SAEs.
- Close monitoring is recommended for patients ineligible for RCTs undergoing systemic therapy.
- The risk-benefit profile of biologic therapies may differ between RCT-eligible and ineligible patients due to baseline risk variations.
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