Expression of concern for

• Abnormal expression of long noncoding RNA FGD5-AS1 affects the development of periodontitis through regulating miR-142-3p/SOCS6/NF-κB pathway.

  Chen H, Lan Z, Li Q, Li Y. Chen H, et al. Artif Cells Nanomed Biotechnol. 2019 Dec;47(1):2098-2106. doi: 10.1080/21691401.2019.1620256. Artif Cells Nanomed Biotechnol. 2019. Retraction in: Artif Cells Nanomed Biotechnol. 2025 Dec;53(1):491. doi: 10.1080/21691401.2025.2575232. PMID: 31144533 Retracted.