Evidence map›Paper›PMID 34635855›Full record

Trial reportNature medicine2021

ACC inhibitor alone or co-administered with a DGAT2 inhibitor in patients with non-alcoholic fatty liver disease: two parallel, placebo-controlled, randomized phase 2a trials.

Roberto A Calle, Neeta B Amin, Santos Carvajal-Gonzalez, Trenton T Ross, Arthur Bergman, Sudeepta Aggarwal, Collin Crowley, Anthony Rinaldi, Jessica Mancuso, Naresh Aggarwal and 11 more

2 registry-linked trialsAbstract readClinical Trial, Phase IIRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Nature medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 118 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 1 pooled it
21.8field-weighted citation impact, top 1% 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.

NCT03248882 phase2completednot on this map

A phase 2a, randomized, double-blind, placebo-controlled, dose-ranging, parallel group study to evaluate safety, tolerability, and pharmacodynamics of pf-05221304 administered daily for 16-weeks to adult subjects with nonalcoholic fatty liver disease

TypeinterventionalSponsorPfizerRan2017 to 2019Enrolled305ConditionsNonalcoholic Fatty Liver Disease, Nonalcoholic SteatohepatitisArmsPlacebo, PF-05221304
NCT03776175 phase2completednot on this map

A phase 2a, randomized, double blind (sponsor-open), placebo controlled, parallel group study to assess the pharmacodynamics, safety and tolerability of pf-05221304 and pf-06865571 co-administered for 6 weeks in adults with non-alcoholic fatty liver disease (nafld)

TypeinterventionalSponsorPfizerRan2019 to 2019Enrolled99ConditionsNon-Alcoholic Fatty Liver Disease (NAFLD)ArmsPF-05221304 Monotherapy, PF-06865571 Monotherapy, Placebo, PF-05221304 and PF-06865571 Combination
3 · Its place in the literature

Who cites it

118 citing papers in PubMed, 1 synthesis or guideline pooled it, 210 citations in OpenAlex.

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  11. Lipid metabolism in pancreatic cancer treatment.World journal of clinical oncology · 2026
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58 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

21 authors at 2 institutions in 2 countries.

Roberto A Calle *Internal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.ORCID http://orcid.org/0000-0001-6577-5657
Neeta B Amin *Internal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Santos Carvajal-GonzalezEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.
Trenton T RossInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Arthur BergmanEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.
Sudeepta AggarwalEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.
Collin CrowleyInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Anthony RinaldiInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Jessica MancusoEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.
Naresh AggarwalAggarwal and Associates Limited, Brampton, ON, Canada.
Veena SomayajiEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.
Malgorzata InglotDepartment of Infectious Diseases, Liver Diseases and Acquired Immune Deficiencies, Wrocław Medical University, Wrocław, Poland.
Theresa A TuthillEarly Clinical Development, Pfizer Inc, Cambridge, MA, USA.ORCID http://orcid.org/0000-0003-0170-3974
Kou KouInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Magalie BoucherDrug Safety Research and Development Global Pathology, Pfizer Worldwide Research and Development, Cambridge, MA, USA.
Greg TeszInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Robert DulleaInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
Kendra K BenceInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.ORCID http://orcid.org/0000-0002-5879-4726
Albert M KimInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.ORCID http://orcid.org/0000-0002-5269-2155
Jeffrey A PfefferkornInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA.
William P EslerInternal Medicine Research Unit, Pfizer Inc, Cambridge, MA, USA. william.esler@Pfizer.com.ORCID http://orcid.org/0000-0003-4783-8620
Pfizer (United States) · USWroclaw Medical University · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alterations in lipid metabolism might contribute to the pathogenesis of non-alcoholic fatty liver disease (NAFLD). However, no pharmacological agents are currently approved in the United States or the European Union for the treatment of NAFLD. Two parallel phase 2a studies investigated the effects of liver-directed ACC1/2 inhibition in adults with NAFLD. The first study ( NCT03248882 ) examined the effects of monotherapy with a novel ACC1/2 inhibitor, PF-05221304 (2, 10, 25 and 50 mg once daily (QD)), versus placebo at 16 weeks of treatment; the second study ( NCT03776175 ) investigated the effects of PF-05221304 (15 mg twice daily (BID)) co-administered with a DGAT2 inhibitor, PF-06865571 (300 mg BID), versus placebo after 6 weeks of treatment. The primary endpoint in both studies was percent change from baseline in liver fat assessed by magnetic resonance imaging-proton density fat fraction. Dose-dependent reductions in liver fat reached 50-65% with PF-05221304 monotherapy doses ≥10 mg QD; least squares mean (LSM) 80% confidence interval (CI) was -7.2 (-13.9, 0.0), -17.1 (-22.7, -11.1), -49.9 (-53.3, -46.2), -55.9 (-59.0, -52.4) and -64.8 (-67.5, -62.0) with 16 weeks placebo and PF-05221304 2, 10, 25 and 50 mg QD, respectively. The overall incidence of adverse events (AEs) did not increase with increasing PF-05221304 dose, except for a dose-dependent elevation in serum triglycerides (a known consequence of hepatic acetyl-coenzyme A carboxylase (ACC) inhibition) in 23/305 (8%) patients, leading to withdrawal in 13/305 (4%), and a dose-dependent elevation in other serum lipids. Co-administration of PF-05221304 and PF-06865571 lowered liver fat compared to placebo (placebo-adjusted LSM (90% CI) -44.6% (-54.8, -32.2)). Placebo-adjusted LSM (90% CI) reduction in liver fat was -44.5% (-55.0, -31.7) and -35.4% (-47.4, -20.7) after 6 weeks with PF-05221304 or PF-06865571 alone. AEs were reported for 10/28 (36%) patients after co-administered PF-05221304 and PF-06865571, with no discontinuations due to AEs, and the ACC inhibitor-mediated effect on serum triglycerides was mitigated, suggesting that PF-05221304 and PF-06865571 co-administration has the potential to address some of the limitations of ACC inhibition alone.

Indexed as

Acetyl-CoA CarboxylaseDiacylglycerol O-AcyltransferaseDouble-Blind MethodDrug SynergismEnzyme InhibitorsFemaleHumansLipid MetabolismLiverMagnetic Resonance ImagingMaleMiddle AgedNon-alcoholic Fatty Liver DiseasePlacebosAcetyl-CoA CarboxylaseDGAT2 protein, humanDiacylglycerol O-AcyltransferaseEnzyme InhibitorsPlacebos

Identifiers

PMID34635855
OpenAlexW3205941711

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

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 Socratic graph.