Review for 10.1186/s12876-019-1000-6 (2019)

Reviewer ’s report  
 
Title: The IGF system in patients with inflammatory bowel disease treated with prednisolone or 
infliximab: potential role of the stanniocalcin -2 / PAPP -A / IGFBP -4 axis 
 
Version: 0 Date: 26 Dec 2018  
 
Reviewer: Reviewer 2  
 
Reviewer's report:  
 
PEER REVIEWER ASSESSMENTS:  
 
OBJECTIVE - Full research articles: is there a clear objective that addresses a testable research 
question(s) (brief or other article types: is there a clear objective)?  
Yes - there is a clear objective  
 
DESIGN - Is the current approach (including controls and analysis protocols) appropriate for the 
objective?  
Yes - the approach is appropriate  
 
EXECUTION - Are the experiments and analyses performed with technical rigor to allow 
confidence in the results?  
Yes - experiments  and analyses were performed appropriately  
 
Statistics - Is the use of statistics in the manuscript appropriate?  
Yes - appropriate statistical analyses have been used in the study  
 
INTERPRETATION - Is the current interpretation/discussion of the results re asonable and not 
overstated?  
Yes - the author's interpretation is reasonable  
 
OVERALL MANUSCRIPT POTENTIAL - Is the current version of this work technically 
sound? If not, can revisions be made to make the work technically sound?  
Yes - current version is technically sound  
 
PEER REVIEWER COMMENTS:  
 
GENERAL COMMENTS: Overall, the study is well -designed and acknowledges its limitations. 
It does not overreach its conclusions.  
 
The authors performed their analyses well, explained a com plex signaling pathway with 
sufficient detail, and wrote a very reasonable discussion.  
 
REQUESTED REVISIONS:  
The manuscript would benefit from some power calculations to help describe the strength of 
their data. The manuscript would also benefit from a di agram of the stanniocalcin -2 / PAPP -A / 
IGFBP -4 axis.  
ADDITIONAL REQUESTS/SUGGESTIONS:  
I would strongly encourage the authors include a diagram of the signaling axis they are 
discussing.  
 
Note: This reviewer report can be downloaded - see attached pdf fi le. 
 
 
 
 
 
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Yes 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Yes 
 
Are y ou able to assess any statistics in the manuscript or would you recommend an  
additional statistical review?  
If an additional statistical review is recommended, please specify what aspects require further  
assessment in your comments to the editors.  
 
I am able to assess the statistics  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an  
organisation that may in any way gain or lose financially from the publication of this  
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares  in an organisation that may in any way gain or lose  
financially from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the  
manuscript?  
 
4. Have you recei ved reimbursements, fees, funding, or salary from an organization that 
holds  or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
If you can answer no to all of the above, write 'I declare that I have no competing interests' 
below.  If your reply is yes to any, please give details below.  
 
This reviewer has been recruited by a partner organization, Research Square. Reviewers with 
declared or apparent competing interests are not utilized for these reviews. This reviewer has 
agreed to publication of their comments online under a Creative Commons Attribution License 
attributed to Research Square and was paid a small honorarium for completing the review within 
a specified timeframe. Honoraria for reviews such as this are paid regardless of the review er 
recommendation.  
 
I agree to the open peer review policy o f the journal. I understand that my name will be included  
on my report to the authors and, if the manuscript is accepted for publication, my named report  
including any attachments I upload will be posted on the website along with the authors'  
responses. I agree for my report to be made available under an Open Access Creative Commons  
CC-BY license (http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments  
which I do not wish to be included in my named report can be included as confidential  comments  
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal