Skip to main content

Table 1 Phosphodiesterase inhibitors assessed in clinical trials (2016–2020) [5, 25,26,27,28] (Year refers to the years in which the agent is listed on clinicaltrials.gov as being in a clinical trial)

From: New approaches to symptomatic treatments for Alzheimer’s disease

Year

Agent

PDE Target

Phase

Outcome

2020, 2019

BPN14770

4

2

Synaptic, neuroprotection, anti-inflammatory

2020, 2019, 2018, 2017, 2016

Cilostazol

3

2

Synaptic plasticity and neuroprotection; improved circulation

2019

AR1001

5

2

Synaptic plasticity and amyloid reduction

2017, 2016

BI 409306

9A

3

Cognitive enhancer