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Brief Report
Peer-Review Record

The Blood DNA Methylation Clock GrimAge Is a Robust Surrogate for Airway Epithelia Aging

Biomedicines 2022, 10(12), 3094; https://doi.org/10.3390/biomedicines10123094
by Ana I. Hernandez Cordero 1, Chen Xi Yang 1, Xuan Li 1, Julia Yang 1, Tawimas Shaipanich 2, Julie L. MacIsaac 3, David T. S. Lin 3, Michael S. Kobor 3, Steve Horvath 4,5, Shu Fan Paul Man 1,2, Don D. Sin 1,2 and Janice M. Leung 1,2,*
Reviewer 1:
Reviewer 2:
Biomedicines 2022, 10(12), 3094; https://doi.org/10.3390/biomedicines10123094
Submission received: 10 November 2022 / Revised: 23 November 2022 / Accepted: 25 November 2022 / Published: 1 December 2022

Round 1

Reviewer 1 Report

I have commentds below.

1,It is better to add one more figure.
2,Authors performed DNA methylation of COPD blood samples by ILLumina. They found age acceleration as epigenetic change. I do not understand they mentioned as "clock". They need to explain more detail.


Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

This study investigated which DNA methylation clock could best reflect airway epigenetic age when using blood samples. The findings suggests that blood DNAmGrim Age accurately reflects airway epigenetic age of individuals and that its elevation is highly associated with COPD.

The manuscript is well written and very clear for the most part. I only have some suggestions for Table1 and Figure 1.

Table 1: The 4th column title is confusing, based on the text the R values given are for epigenetic age (not epigenetic biomarkers?).

Figure1: I suggest putting the Clock Names above each sub-figure. Also, the X-axis title could be better. 

Author Response

Please see the attachment

Author Response File: Author Response.pdf

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