Evidence map›Paper›PMID 33844854›Full record

ArticleInternational journal of cancer2021

Bone fracture as a novel immune-related adverse event with immune checkpoint inhibitors: Case series and large-scale pharmacovigilance analysis.

Daria Maria Filippini, Milo Gatti, Vito Di Martino, Stefano Cavalieri, Michele Fusaroli, Andrea Ardizzoni, Emanuel Raschi, Lisa Licitra

Open access · hybridAbstract readCase Reports
In one paragraph

Article in International journal of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 11% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Bone health in patients with cancer: a SEOM-SEIOMM consensus review of risk factors, assessment strategies, and management approaches.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Bone mineral density changes following immune checkpoint inhibitor therapy: insights from a case series analysis.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Article
  8. Review
  9. Programmed cell death protein 1 (PD-1) blockade regulates skeletal remodeling in a sex- and age-dependent manner.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Article
  10. Article
  11. Assessing the effects of immune checkpoint inhibitors on bone utilizing machine learning-assisted opportunistic quantitative computed tomography.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Cancer treatment-induced bone loss.The Korean journal of internal medicine · 2024
    Review
  19. Article
  20. Review
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

8 authors at 4 institutions in 1 country.

Daria Maria FilippiniHead and Neck Medical Oncology Unit, Fondazione IRCCS-Istituto Nazionale dei Tumori, Milan, Italy.
Milo GattiPharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy.ORCID 0000-0003-3018-3779
Vito Di MartinoHead and Neck Medical Oncology Unit, Fondazione IRCCS-Istituto Nazionale dei Tumori, Milan, Italy.
Stefano CavalieriHead and Neck Medical Oncology Unit, Fondazione IRCCS-Istituto Nazionale dei Tumori, Milan, Italy.
Michele FusaroliPharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy.
Andrea ArdizzoniMedical Oncology Unit, Department of Experimental, Diagnostic and Specialty Medicine, Policlinico S. Orsola-Malpighi, Alma Mater Studiorum-University of Bologna, Bologna, Italy.
Emanuel RaschiPharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy.
Lisa LicitraHead and Neck Medical Oncology Unit, Fondazione IRCCS-Istituto Nazionale dei Tumori, Milan, Italy.
Fondazione IRCCS Istituto Nazionale dei Tumori · ITUniversity of Bologna · ITIRCCS Azienda Ospedliero-Universitaria di Bologna Policlinico di Sant'Orsola · ITUniversity of Milan · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although immune checkpoint inhibitors (ICIs) are associated with different immune-related adverse events (irAEs), the potential effect on the skeleton is poorly defined albeit biologically plausible and assessable through pharmacovigilance. We described a case series of patients experiencing skeletal fractures while on ICIs at the National Cancer Institute of Milan. To better characterize the clinical features of skeletal irAEs reported with ICIs, we queried the FDA Adverse Event Reporting System (FAERS) and performed disproportionality analysis by means of reporting odds ratios (RORs), deemed significant by a lower limit of the 95% confidence interval (LL95% CI) > 1. Bone AEs emerging as significant were scrutinized in terms of demographic and clinical data, including concomitant irAEs or drugs affecting bone resorption or causing bone damage. Four patients with skeletal events while on ICIs were included in our case series, of which three exhibited vertebral fractures. In FAERS, 650 patients with bone and joint injuries and treated with ICIs were retrieved, accounting for 822 drug-event pairs. Statistically significant ROR was found for eight, two and one bone AEs respectively with PD-1, PD-L1 and CTLA-4 inhibitors, being pathological fracture (N = 46; ROR = 3.17; LL95%CI = 2.37), spinal compression fracture (42; 2.51; 1.91), and femoral neck fracture (26; 2.38; 1.62) the most common. Concomitant irAEs or drugs affecting bone metabolism were poorly reported. The increased reporting of serious vertebral fractures in patients without concomitant irAEs and no apparent preexisting risk factors could suggest a possible cause-effect relationship and calls for close clinical monitoring and implementation of dedicated guidelines.

Indexed as

PharmacovigilanceAgedDatabases, FactualDrug-Related Side Effects and Adverse ReactionsFemaleFollow-Up StudiesFractures, BoneHumansImmune Checkpoint InhibitorsMaleMiddle AgedNeoplasm Recurrence, LocalNeoplasmsPrognosisRetrospective StudiesRisk FactorsImmune Checkpoint Inhibitorsdisproportionality analysisimmune checkpoint inhibitorsskeletal immune-related adverse eventsvertebral fracture

Identifiers

PMID33844854
PMCPMC8251715
OpenAlexW3152783197

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.