Evidence map›Paper›PMID 24802722›Full record

Trial reportBritish journal of clinical pharmacology2014

The central nervous system effects of the partial GABA-Aα2,3 -selective receptor modulator AZD7325 in comparison with lorazepam in healthy males.

Xia Chen, Gabriël Jacobs, Marieke de Kam, Judith Jaeger, Jaakko Lappalainen, Paul Maruff, Mark A Smith, Alan J Cross, Adam Cohen, Joop van Gerven

Open access · bronzeAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in British journal of clinical pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 32% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Pharmacodynamic response profiles of anxiolytic and sedative drugs.British journal of clinical pharmacology · 2017
    Trial
  8. GABAJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Article
  9. Article
  10. ENX-101, a GABAEpilepsia · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. GABAFrontiers in psychiatry · 2021
    Article
  17. Review
  18. Review
  19. Review
  20. Synthesis of C-14 labeled GABAJournal of labelled compounds & radiopharmaceuticals · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 7 countries.

Xia ChenPhase I Unit, Clinical Pharmacology Research Center (CPRC), Peking Union Medical College Hospital, Beijing, China; Centre for Human Drug Research, Leiden, The Netherlands.
Gabriël Jacobs
Marieke de Kam
Judith Jaeger
Jaakko Lappalainen
Paul Maruff
Mark A Smith
Alan J Cross
Adam Cohen
Joop van Gerven
AstraZeneca (United Kingdom) · GBCentre for Human Drug Research · NLChinese Academy of Medical Sciences & Peking Union Medical College · CNProstate Cancer Foundation of Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsAZD7325 is a novel α2,3 -subtype-selective partial GABA-A-receptor modulator. This study investigated the pharmacodynamics of single oral doses of AZD7325 2 mg and 10 mg on the central nervous system (CNS) compared with placebo and lorazepam 2 mg.

methodsThis double-blind, randomized, four way crossover study enrolled 16 healthy males and administered two validated CNS test batteries to measure drug effects on cognitive, neurophysiologic and psychomotor function and subjective feelings. The pharmacological selectivity of AZD7325 was compared with lorazepam by plotting saccadic peak velocity change from baseline (ΔSPV) against body sway (ΔSway) and visual analogue scale for alertness(ΔVASalertness ). This analysis has previously been used to identify α2,3 -subtype-selectivity.

resultsIn contrast with the robust impairment caused by lorazepam (all P < 0.05 vs. placebo), neither dose of AZD7325 induced statistically significant effects on any pharmacodynamic measurements. Lorazepam-induced SPV-reduction was linearly related to changes in other neurophysiologic biomarkers. In contrast, the slopes of the regression lines were flatter for AZD7325, particularly for the Δlog(Sway) -ΔSPV relation (estimate slope, AZD7325 10 mg vs. lorazepam, difference [95% confidence interval], P value -0.00036 vs. -0.00206, 0.001704 [0.000639, 0.002768], P = 0.0018) and the ΔVASalertness -ΔSPV relationship (0.01855 vs. 0.08216, -0.06360 [-0.1046, -0.02257], P = 0.0024). AZD7325 10 mg and lorazepam induced different response patterns on VAS 'feeling high' and electro-encephalography.

conclusionThe characteristic ΔSPV-relative effect profiles of AZD7325 vs. lorazepam suggest anxio-selectivity related to α2,3 -selective GABAA agonism. However, exploration of higher doses may be warranted. The paucity of effects on most CNS-PD parameters also indicates a mitigated side effect pattern, with potentially lower cognitive and neurophysiological side effect burden than non-selective benzodiazepines.

Indexed as

AdultBrainCross-Over StudiesDouble-Blind MethodElectroencephalographyGABA ModulatorsHeterocyclic Compounds, 2-RingHumansLorazepamMaleReceptors, GABA-A4-amino-8-(2-fluoro-6-methoxy-phenyl)-N-propylcinnoline-3-carboxamideGABA ModulatorsGABRA2 protein, humanHeterocyclic Compounds, 2-RingLorazepamReceptors, GABA-AagonismAZD7325GABAergicpharmacodynamicselective

Identifiers

PMID24802722
PMCPMC4256620
OpenAlexW2155102030

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.