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With the agreement of the Editor-in-Chief, the editorial board and the publisher Bioscientifica Ltd, Endocrine Connections is publishing an Expression of Concern regarding an article that appeared in volume 12, part 5, article ID , and an Erratum to that article that appeared in volume 14, part 12, article ID x230014.
In November 2025, the authors requested correction of inadvertent replication of panels in Fig. 2F. An Erratum was published in December 2025. In May 2026 the journal was then alerted to potential image manipulation in Fig. 2E and Fig. 2F. The replacement Fig. 2 supplied by the authors for the Erratum to Fig. 2F contained panels in Fig. 2E that were different to those in the original figure, changes which were not disclosed at the time of request for correction.
This Expression of Concern is to alert readers that an active investigation is underway into allegations made regarding this article and the data reported within it:
Chen Z, Zhong X, Tang W, Xia M, Liu C, Guo Y, Yi Y, Jiang Q, Zu X & Zhong J. Intracellular FGF1 promotes invasion and migration in thyroid carcinoma via HMGA1 independent of FGF receptors. Endocr Connect 2023 12(5) e230014. (https://doi.org/10.1530/EC-23-0014). Erratum in: Endocr Connect 2025 14(12) x230014. (https://doi.org/10.1530/EC-23-0014e).
An update to this notice will be published once the investigation is concluded.