Evidence map›Paper›PMID 33707569›Full record

ArticleScientific reports2021

Next generation of anti-PD-L1 Atezolizumab with enhanced anti-tumor efficacy in vivo.

Maohua Li, Rongqing Zhao, Jianxin Chen, Wenzhi Tian, Chenxi Xia, Xudong Liu, Yingzi Li, Song Li, Hunter Sun, Tong Shen and 2 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
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  4. From Reflection to Implementation: Tailored Clinical Development of a Pembrolizumab Biosimilar Candidate.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2026
    Article
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  6. Alterations in PD-L1Medicina (Kaunas, Lithuania) · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 1 institution in 1 country.

Maohua LiAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China.
Rongqing ZhaoAnyGo Technology Co., LTD, Beijing, China.
Jianxin ChenZhenGe Biotechnology Co., LTD, Shanghai, China.
Wenzhi TianImmuneOnco Biopharma (Shanghai) Co., LTD, Shanghai, China.
Chenxi XiaAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China.
Xudong LiuAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China.
Yingzi LiAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China.
Song LiImmuneOnco Biopharma (Shanghai) Co., LTD, Shanghai, China.
Hunter SunAnyGo Technology Co., LTD, Beijing, China.
Tong ShenAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China.
Wenlin RenAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China. renwl@antibodychina.com.
Le SunAbMax BioPharmaceuticals Co., LTD, 99 Kechuang 14th Street, BDA, Beijing, 101111, China. sunl@antibodychina.com.
AbMax AntibodyChina (China) · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

FDA-approved anti-PD-L1 antibody drug Atezolizumab is a human IgG1 without glycosylation by an N297A mutation. Aglycosylation of IgG1 has been used to completely remove the unwanted Fc-mediated functions such as antibody-dependent cytotoxicity (ADCC). However, aglycosylated Atezolizumab is very unstable and easy to form aggregation, which causes quick development of anti-drug antibody (ADA) in 41% of Atezolizumab-treated cancer patients, eventually leading to loss of efficacy. Here, we report the development of the anti-PD-L1 antibody drug Maxatezo, a glycosylated version of Atezolizumab, with no ADCC activity, better thermo-stability, and significantly improved anti-tumor activity in vivo. Using Atezolizumab as the starting template, we back-mutated A297N to re-install the glycosylation, and inserted a short, flexible amino acid sequence (GGGS) between G237 and G238 in the hinge region of the IgG1 heavy chain. Our data shows that insertion of GGGS, does not alter the anti-PD-L1's affinity and inhibitory activity, while completely abolishing ADCC activity. Maxatezo has a similar glycosylation profile and expression level (up to 5.4 g/L) as any normal human IgG1. Most importantly, Maxatezo's thermal stability is much better than Atezolizumab, as evidenced by dramatic increases of Tm1 from 63.55 °C to 71.01 °C and T

Indexed as

AnimalsAntibodies, Monoclonal, HumanizedAntibody-Dependent Cell CytotoxicityAntineoplastic AgentsB7-H1 AntigenCell Line, TumorCell ProliferationDisease Models, AnimalGlycosylationHumansMiceMice, Inbred C57BLNeoplasmsReceptors, FcTemperatureAntibodies, Monoclonal, HumanizedAntineoplastic AgentsatezolizumabB7-H1 AntigenReceptors, Fc

Identifiers

PMID33707569
PMCPMC7952408
OpenAlexW3134924947

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.