Integrity Review of “In vivo base editing rescues Hutchinson–Gilford progeria syndrome in mice” (DOI: 10.1038/s41586-020-03086-7)

Academic fraud report · Geng Detector

Summary

This report finds no clear evidence of research misconduct or image fabrication in the Nature article “In vivo base editing rescues Hutchinson–Gilford progeria syndrome in mice” (DOI: 10.1038/s41586-020-03086-7). Apparent reuse of histological images and western-blot-derived plots across main and extended-data figures is explicitly disclosed where appropriate, including the statement that liver and heart blots are reproduced from Fig. 3c for ease of comparison. Reported animal identifiers are described as matching. Raw 800-nm fluorescence values, including highly variable, low, and missing measurements, are also shown, which is more consistent with experimental data than uniformly generated values. The longevity study transparently reports exclusion of 3 of 48 mice for health issues judged unrelated to progeria or treatment, rather than maintaining identical final group sizes. The authors additionally investigated liver tumours in 5 of 9 treated mice using whole-genome sequencing, addressing a potentially important safety concern. Overall, the cited transparency supports the report’s “clear/no misconduct” verdict, although the review is based on the supplied report and does not independently reproduce the underlying experiments, raw images, sequencing data, or statistical analyses.

Verdict

No clear evidence of academic fraud or image fabrication identified. The report rates the study as “clear” and recommends no further action. This assessment is limited to the evidence described in the supplied report; it is not an independent forensic verification of the original data.

Key findings

Apparent reuse of images or western-blot-derived plots between the main and extended figures was explicitly disclosed in figure notes. The statement that liver and heart blots are reproduced from Fig. 3c for ease of comparison supports interpretation as legitimate comparative reuse rather than concealed duplication.
Reported animal identifiers, including 9459M and 9536F, are described as consistent across the relevant displays.
The manuscript displays heterogeneous raw 800-nm fluorescence measurements, including 149000, 231000, 106000, and 967, as well as missing values marked n/a. The variability is presented as evidence consistent with genuine experimental measurement rather than artificially generated data.
In the longevity study, 3 of 48 mice were excluded after health issues judged unrelated to progeria or treatment. This transparent attrition differs from studies that preserve identical final group sizes without explanation.
The report also describes non-ideal biological outcomes, including liver tumours in 5 of 9 treated mice, and notes that the authors investigated them with whole-genome sequencing.
These features are interpreted as signs of transparent reporting and are not, by themselves, proof of authenticity. Independent examination of the original figures, raw data, and statistical files would be required for a definitive forensic conclusion.

Evidence highlights

DOI: 10.1038/s41586-020-03086-7
Publication: Nature, Vol. 589; published online 6 January 2021.
Explicit image reuse note: “Liver and heart blots are reproduced from Fig. 3c for ease of comparison.”
Raw fluorescence examples: 149000, 231000, 106000, 967, and n/a.
Longevity-study exclusions: 3 of 48 mice excluded for health issues considered unrelated to progeria or treatment.
Tumour observation: liver tumours reported in 5 of 9 treated mice, with whole-genome sequencing investigation described in the report.

Notes

The supplied report characterizes the findings as “authenticity evidence” and praises the authors’ transparency, but the underlying figures, raw blot files, sequencing outputs, and complete statistical analysis were not independently reviewed here. Reported exclusions, tumour incidence, and animal identifiers should therefore be checked against the original article and supplementary information. No official institutional investigation or contrary finding is identified in the supplied material.