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Other Article Types

Formal Comments

Formal Comments are invited by PLOS ONE staff editors to promote scientific discourse about PLOS ONE articles. They provide additional perspectives or context on a publication, especially in areas of policy, societal relevance, or ongoing scientific debate.

PLOS ONE may invite a Formal Comment as:

  • response to scientific criticism or re-analysis by authors whose work is disputed in a PLOS ONE publication.
  • an article that offers an expert, broad and balanced perspective on a PLOS ONE publication, or adds context on the potential editorial, societal or policy implications of the findings.

Formal Comments should be concise, coherent, well-argued and of timely relevance to the field. PLOS ONE will peer-review Formal Comments. The journal will also invite the authors of the article under discussion to provide a signed review for the Formal Comment.

Formal Comments are not meant to address concerns around publication ethics. You can direct ethical concerns about PLOS ONE articles to our editorial office,

PLOS ONE staff editors will not consider unsolicited Formal Comments. 

Collection Reviews

PLOS ONE will consider Collection Review articles within pre-planned Collections with the goal to provide deeper insight into one or more of the topics covered in the Collection. These articles are narrative reviews that discuss current developments in a particular field under the Collection’s scope. 

Collection Reviews are peer-reviewed and should be balanced, representative of the literature on the topic covered, coherent, provide a compelling narrative that draws meaningful conclusions adding to knowledge in the field, and be clearly positioned in the subject of the Collection. 

Collection Reviews will be considered within a pre-planned Collection subject to prior approval by journal editors, or they may be commissioned by staff editors. PLOS ONE staff editors will not consider unsolicited Collection Reviews.

Guidance on the format and style for Collection Reviews:

  • Collection Reviews should be a maximum of 4,000 words. There should be an introduction and a conclusion, any other subheadings should reflect the content. 
  • The introduction should summarise the background of the topic and the purpose of the review.
  • Where possible, the article should outline implications to the field and recommendations based on the evidence presented.
  • The conclusion should outline a succinct summary of the key points.
  • Collection Reviews should make good use of tables, figures and boxes to summarise points or compare approaches, and to help reduce word length. 

Collection Overviews

PLOS ONE will consider Collection Overview articles within pre-planned Collections. Collection Overviews discuss the relevant history and scientific background of a Collection, and unlike Collection Reviews, they are not intended as an exhaustive summary of a particular topic, but rather aim to place the articles included in the Collection within the context of knowledge in the field. 

Collection Overviews should be concise, with suitable referencing, and provide the appropriate context for the publications in the Collection. 

Collection Overviews will be considered within a pre-planned Collection subject to prior approval by journal editors, or they may be commissioned by staff editors from the Guest Editor(s) of a Collection. PLOS ONE staff editors will not consider unsolicited Collection Overviews.

Topic Pages

The intent of Topic Page articles is to increase the coverage of scientific topics in Wikipedia. Topic Pages are written in the style of a Wikipedia article and, after open peer review on the PLOS Wiki, become a published copy of record with a dynamic version of the article posted on Wikipedia. 

While Academic Editors most often solicit Topic Pages from researchers in their areas of expertise, we also welcome new proposals and inquiries for editorial consideration. Proposals should address topics that are of interest to the scientific community and wider general public and that are not yet covered or are currently under-developed, in Wikipedia.

Read more about Topic Pages in our blog and in the Topic Pages editorial
Previously published Topic Pages can be found in the PLOS Collection. More information and instructions on how to submit can be found in the Author Guide. Suggestions for ideas should be emailed to