Evidence map›Paper›PMID 34045234›Full record

ArticleMolecular cancer therapeutics2021

M3258 Is a Selective Inhibitor of the Immunoproteasome Subunit LMP7 (β5i) Delivering Efficacy in Multiple Myeloma Models.

Michael P Sanderson, Manja Friese-Hamim, Gina Walter-Bausch, Michael Busch, Stefanie Gaus, Djordje Musil, Felix Rohdich, Ugo Zanelli, Sondra L Downey-Kopyscinski, Constantine S Mitsiades and 3 more

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in Molecular cancer therapeutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04075721 (A Phase I Open Label First in Human Dose Escalation of the Immunoproteasome Inhibitor M3258 as a Single Agent and Expansion Study of M3258 in Combination With Dexamethasone in Participants With Relapsed Refractory Multiple Myeloma), which is not on this map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.4field-weighted citation impact, top 7% 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.

NCT04075721 phase1terminatednot on this map

A Phase I Open Label First in Human Dose Escalation of the Immunoproteasome Inhibitor M3258 as a Single Agent and Expansion Study of M3258 in Combination With Dexamethasone in Participants With Relapsed Refractory Multiple Myeloma

TypeinterventionalSponsorEMD Serono Research & Development Institute, Inc.Ran2019 to 2021Enrolled10ConditionsMultiple MyelomaArmsM3258, M3258 20 mg
3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Dissecting Complex Interactions Between Ferroptosis and the Proteasome.bioRxiv : the preprint server for biology · 2026
    Article
  3. Review
  4. Review
  5. Article
  6. The immunoproteasome regulates ILC2 responses by modulating mitochondrial capacity.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
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  15. Article
  16. Article
  17. Review
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  20. 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

13 authors at 2 institutions in 2 countries.

Michael P Sanderson *Merck KGaA, Darmstadt, Germany. michael.sanderson@merckgroup.com.
Manja Friese-Hamim *Merck KGaA, Darmstadt, Germany.
Gina Walter-Bausch *Merck KGaA, Darmstadt, Germany.
Michael BuschMerck KGaA, Darmstadt, Germany.
Stefanie GausMerck KGaA, Darmstadt, Germany.
Djordje MusilMerck KGaA, Darmstadt, Germany.
Felix RohdichMerck KGaA, Darmstadt, Germany.
Ugo ZanelliMerck KGaA, Darmstadt, Germany.
Sondra L Downey-KopyscinskiDepartment of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.
Constantine S MitsiadesDepartment of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.
Oliver SchadtMerck KGaA, Darmstadt, Germany.
Markus KleinMerck KGaA, Darmstadt, Germany.
Christina Esdar *Merck KGaA, Darmstadt, Germany.
Merck (Germany) · DEDana-Farber Cancer Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Large multifunctional peptidase 7 (LMP7/β5i/PSMB8) is a proteolytic subunit of the immunoproteasome, which is predominantly expressed in normal and malignant hematolymphoid cells, including multiple myeloma, and contributes to the degradation of ubiquitinated proteins. Described herein for the first time is the preclinical profile of M3258; an orally bioavailable, potent, reversible and highly selective LMP7 inhibitor. M3258 demonstrated strong antitumor efficacy in multiple myeloma xenograft models, including a novel model of the human bone niche of multiple myeloma. M3258 treatment led to a significant and prolonged suppression of tumor LMP7 activity and ubiquitinated protein turnover and the induction of apoptosis in multiple myeloma cells both

Indexed as

AnimalsAntineoplastic Combined Chemotherapy ProtocolsApoptosisBoron CompoundsBoronic AcidsBortezomibCell ProliferationDrug Resistance, NeoplasmFemaleFuransGene Expression Regulation, NeoplasticGlycineHumansMiceMice, NudeMultiple MyelomaBoron CompoundsBoronic AcidsBortezomibFuransGlycineixazomibLMP7 proteinM3258Proteasome Endopeptidase Complex

Identifiers

PMID34045234
PMCPMC9398180
OpenAlexW3164170380

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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 OpenQuestion graph.