Effects of Atypical Antipsychotics on Blood Cell Levels in Older Adults

Retrospective Study on the Hematological Effects of Atypical Antipsychotics (AAPs) in a Geriatric Population: What is the Role of 5-HT2 Receptors

Observational University Hospital, Strasbourg, France · NCT06107322

This study looks at how certain antipsychotic medications affect blood cell levels in older adults to see if they cause any problems, especially with white blood cells.

Quick facts

Study typeObservational
Enrollment20 (estimated)
Ages65 Years and up
SexAll
SponsorUniversity Hospital, Strasbourg, France Academic / other
Locations1 site (Strasbourg)
Trial IDNCT06107322 on ClinicalTrials.gov

What this trial studies

This observational study investigates the hematological effects of atypical antipsychotics, particularly focusing on neutropenia, in an elderly population. It aims to understand the role of 5-HT2 receptors in the differentiation and mobilization of hematopoietic cells among older patients receiving these medications. The study population includes elderly individuals hospitalized in various geriatric care settings, where the use of clozapine and other atypical antipsychotics is common for treating behavioral disorders associated with dementia. By analyzing the occurrence of white blood cell abnormalities, the study seeks to improve prescribing practices for this vulnerable group.

Who should consider this trial

Good fit: Ideal candidates are elderly individuals aged 65 and older who are hospitalized in geriatric care settings and require treatment with atypical antipsychotics.

Not a fit: Patients who have pre-existing white blood cell abnormalities or those who have been on neuroleptics prior to admission may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to safer prescribing practices for atypical antipsychotics in elderly patients, reducing the risk of serious blood-related side effects.

How similar studies have performed: While there have been studies on clozapine in similar contexts, this specific investigation into the role of 5-HT2 receptors in the elderly population is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Major subject (≥ 65 years old)
* Subject hospitalized in Geriatric Internal Medicine, in Geriatric Follow-up Care and Rehabilitation, in a Long-Term Care Unit or Important Medical-Technical Care, in a Reinforced Accommodation Unit or in a Cognitive-Behavioral Unit at Strasbourg University Hospitals)
* Subject not opposing the reuse of their data for the purposes of this research.
* Indication for the introduction of the neuroleptic indicated
* Available dosage and frequency of administration and duration of treatment

Exclusion Criteria:

* Subject having expressed opposition to participating in the study
* Presence of a neuroleptic before admission to the University Hospitals of Strasbourg, excluding readmission of a patient included
* Neuroleptics not present on the discharge prescription for long-term treatment
* Neuroleptics prescribed for less than 48 hours
* Presence of a white lineage anomaly prior to the initiation of neuroleptic treatment
* Patient contraindicated for taking a long-term neuroleptic.
* Hematological disease with white lineage abnormality (lymphoma, leukemia, myelodysplasia, mye syndrome

Where this trial is running

Strasbourg

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions NeutropeniaAtypical antipsychotics5-HT2 receptorsHematological effects
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.