Factbox-Roche's drug failure extends long list of Alzheimer's trial setbacks

(Reuters) -Roche Holding AG reported on Monday that its Alzheimer's drug candidate, gantenerumab, did not meet main goals of studies, marking another setback for companies trying to find an effective treatment for the memory-robbing disease.

The results come nearly two months after partners Eisai Co Ltd and Biogen Inc reported that their Alzheimer's disease drug, lecanemab, significantly slowed cognitive decline in a large trial.

The following is a list of high-profile Alzheimer's disease trial failures:

Company Drug Trial outcome Mechanism of

name/year action

Roche gantenerumab Did Designed to

(2022) not meet main target

goals of trials, beta-amyloid

failed to slow and remove

dementia brain plaques

progression in to slow down

two studies. dementia

progression.

Roche crenezumab Although small A monoclonal

(2022) numerical antibody

differences targeting toxic

favored protein plaque

crenezumab, the in the brain

results were not known as beta

statistically amyloid to slow

significant and disease

potentially due progression.

to chance.

Biogen gosuranemab An antibody

(2021) Failed to meet directed

any against "tau"

efficacy goals proteins

in trial. believed to

play a role in

Alzheimer's.

Roche and semorinemab Targeted "tau"

AC Immune Failed proteins.

(2020) to

slow cognitive

and functional

decline in

trial.

Roche and gantenerumab, Combination Designed to

Eli Lilly solanezumab failed to arrest neutralize

(2020) cognitive beta-amyloid

decline in those plaques.

afflicted by

gene mutations.

Neurotrope bryostatin-1 Drug did not Designed to

Inc, now show any induce growth

called significant of synapses in

Synaptogen difference in the brain and

ix Inc patients after prevent cell

(2019) 13 weeks in a death.

mid-stage trial.

Biogen and elenbecestat The companies BACE inhibitor

Eisai Co scrapped two

(2019) late-stage

studies in

patients with

early

Alzheimer’s,

after

independent

committee

recommended

discontinuation.

Novartis, CNP520 Companies BACE inhibitor

Amgen, discontinued two

Banner mid-to-late-stag

Alzheimer' e studies after

s identifying

Institute worsening of

(2019) some measures of

cognitive

function in

treatment

groups.

Merck & Co verubecestat Did A beta

not work in secretase

(2018) late-stage cleaving enzyme

trials in (BACE)

patients with inhibitor,

both very early which aims to

Alzheimer's and prevent amyloid

those with mild- buildup.

to-moderate

Alzheimer's.

AstraZenec lanabecestat Companies Beta secretase

a, Eli discontinued cleaving enzyme

Lilly late-stage (BACE)

(2018) trials of the inhibitor,

drug after which aims to

independent prevent amyloid

committee buildup.

concluded they

were unlikely to

succeed.

Johnson & atabecestat BACE inhibitor

Johnson Stopped

development in

(2018) mid-stage trials

after

participants

showed serious

elevations of

liver enzymes.

Eli Lilly solanezumab In a late-stage Targets

and Co study, patients beta-amyloid,

(2016) treated with the Alzheimer’s

solanezumab did protein that

not experience a forms sticky

significantly plaques in the

greater slowing brain.

in cognitive

decline vs

placebo.

Pfizer bapineuzumab The drugmakers Beta-amyloid

Inc, called off targeting

Johnson & additional work monoclonal

Johnson after the drug antibody.

(2012) failed to help

patients with

mild-to-moderate

Alzheimer's in

its second round

of clinical

trials.

(Reporting by Bhanvi Satija, Raghav Mahobe and Manas Mishra in Bengaluru; Editing by Bill Berkrot and Sriraj Kalluvila)