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Retrospective observational studies in ultra-rare sarcomas: A consensus paper from the Connective Tissue Oncology Society (CTOS) community of experts on the minimum requirements for the evaluation of activity of systemic treatments

Stacchiotti, Silvia ; Eriksson, M. LU orcid and Wagner, A.J. (2022) In Cancer Treatment Reviews 110.
Abstract
Background: In ultra-rare sarcomas (URS) the conduction of prospective, randomized trials is challenging. Data from retrospective observational studies (ROS) may represent the best evidence available. ROS implicit limitations led to poor acceptance by the scientific community and regulatory authorities. In this context, an expert panel from the Connective Tissue Oncology Society (CTOS), agreed on the need to establish a set of minimum requirements for conducting high-quality ROS on the activity of systemic therapies in URS. Methods: Representatives from > 25 worldwide sarcoma reference centres met in November 2020 and identified a list of topics summarizing the main issues encountered in ROS on URS. An online survey on these topics was... (More)
Background: In ultra-rare sarcomas (URS) the conduction of prospective, randomized trials is challenging. Data from retrospective observational studies (ROS) may represent the best evidence available. ROS implicit limitations led to poor acceptance by the scientific community and regulatory authorities. In this context, an expert panel from the Connective Tissue Oncology Society (CTOS), agreed on the need to establish a set of minimum requirements for conducting high-quality ROS on the activity of systemic therapies in URS. Methods: Representatives from > 25 worldwide sarcoma reference centres met in November 2020 and identified a list of topics summarizing the main issues encountered in ROS on URS. An online survey on these topics was distributed to the panel; results were summarized by descriptive statistics and discussed during a second meeting (November 2021). Results: Topics identified by the panel included the use of ROS results as external control data, the criteria for contributing centers selection, modalities for ensuring a correct pathological diagnosis and radiologic assessment, consistency of surveillance policies across centers, study end-points, risk of data duplication, results publication. Based on the answers to the survey (55 of 62 invited experts) and discussion the panel agreed on 18 statements summarizing principles of recommended practice. Conclusions: These recommendations will be disseminated by CTOS across the sarcoma community and incorporated in future ROS on URS, to maximize their quality and favor their use as control data when results from prospective studies are unavailable. These recommendations could help the optimal conduction of ROS also in other rare tumors. © 2022 Elsevier Ltd (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Consensus, Methodology, Observational study, Retrospective study, Sarcoma, Ultra-rare sarcoma
in
Cancer Treatment Reviews
volume
110
article number
102455
publisher
Elsevier
external identifiers
  • scopus:85136541586
  • pmid:36031697
ISSN
0305-7372
DOI
10.1016/j.ctrv.2022.102455
language
English
LU publication?
yes
id
9fabef4e-5e51-4a2b-b1cd-1d41c1b8f4a4
date added to LUP
2022-12-19 11:31:13
date last changed
2022-12-20 03:00:10
@article{9fabef4e-5e51-4a2b-b1cd-1d41c1b8f4a4,
  abstract     = {{Background: In ultra-rare sarcomas (URS) the conduction of prospective, randomized trials is challenging. Data from retrospective observational studies (ROS) may represent the best evidence available. ROS implicit limitations led to poor acceptance by the scientific community and regulatory authorities. In this context, an expert panel from the Connective Tissue Oncology Society (CTOS), agreed on the need to establish a set of minimum requirements for conducting high-quality ROS on the activity of systemic therapies in URS. Methods: Representatives from > 25 worldwide sarcoma reference centres met in November 2020 and identified a list of topics summarizing the main issues encountered in ROS on URS. An online survey on these topics was distributed to the panel; results were summarized by descriptive statistics and discussed during a second meeting (November 2021). Results: Topics identified by the panel included the use of ROS results as external control data, the criteria for contributing centers selection, modalities for ensuring a correct pathological diagnosis and radiologic assessment, consistency of surveillance policies across centers, study end-points, risk of data duplication, results publication. Based on the answers to the survey (55 of 62 invited experts) and discussion the panel agreed on 18 statements summarizing principles of recommended practice. Conclusions: These recommendations will be disseminated by CTOS across the sarcoma community and incorporated in future ROS on URS, to maximize their quality and favor their use as control data when results from prospective studies are unavailable. These recommendations could help the optimal conduction of ROS also in other rare tumors. © 2022 Elsevier Ltd}},
  author       = {{Stacchiotti, Silvia and Eriksson, M. and Wagner, A.J.}},
  issn         = {{0305-7372}},
  keywords     = {{Consensus; Methodology; Observational study; Retrospective study; Sarcoma; Ultra-rare sarcoma}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Cancer Treatment Reviews}},
  title        = {{Retrospective observational studies in ultra-rare sarcomas: A consensus paper from the Connective Tissue Oncology Society (CTOS) community of experts on the minimum requirements for the evaluation of activity of systemic treatments}},
  url          = {{http://dx.doi.org/10.1016/j.ctrv.2022.102455}},
  doi          = {{10.1016/j.ctrv.2022.102455}},
  volume       = {{110}},
  year         = {{2022}},
}