RICTOR amplification

Additionally, in vitro sensitivity to cisplatin and mTOR inhibitors was evaluated in SCLC cell lines harbouring RICTOR amplification and other mTOR pathway mutations...The importance of these alterations was confirmed both by the sensitising effect of vistusertib in vitro and the RICTOR copy number/expression changes in xenografts. Our study highlights the role of mTORC2 in SCLC progression. Early detection of RICTOR amplification in primary tumours and targeting mTORC2 in these cases may represent a promising novel strategy to develop personalised therapy for metastasis prevention.

In conclusion, the correlation between RICTOR amplification and Rictor membrane staining suggests that the latter can potentially be used as a surrogate marker to identify lung SCC cases with RICTOR amplification. Since a significant proportion of PD-L1 negative SCC cases harbor RICTOR amplification, analyzing PD-L1 negative tumors by RICTOR FISH or Rictor IHC can help select patients who may benefit from mTORC2 inhibitor therapy.

This study clarified the genetic differences between OMM and NMM, and the first to report the frequent occurrence of RICTOR amplification in OMM. This analysis offers insights into the development of personalized therapeutics for OMM.

The increasing knowledge of molecular alterations in malignancies, including mutations and regulatory failures in the mTOR (mechanistic target of rapamycin) signaling pathway, highlights the importance of mTOR hyperactivity as a validated target in common and rare malignancies...Ongoing phase trials of new inhibitors and combination therapies are promising in advanced-stage patients selected by genetic alterations, molecular markers, and/or protein expression changes in the mTOR signaling pathway. Hopefully, the summarized results, our findings, and the suggested characterization of mTOR activity will support therapeutic decisions.

Here, we summarize recent advances that support an important role for Rictor and mTORC2 as potential therapeutic targets in the treatment of lung cancer. This is a traditional (narrative) review based on Pubmed and Google Scholar searches for the following keywords: Rictor, RICTOR amplification, mTORC2, Rictor complexes, lung cancer, metastasis, progression, mTOR inhibitors.

The newly described RICTOR-amplified entities could initiate further collaborative studies with larger cohorts to analyse the prevalence of RICTOR amplification in rare diseases. Finally, our and further work could help to improve and expand future therapeutic opportunities for mTOR-targeted therapies.

It is recommended to investigate mTOR profile activity in patients for whom mTOR inhibitor therapies are considered since the current first-generation mTOR inhibitors (rapamycin and analogues) may be ineffective in case of mTORC2 hyperactivity. Ongoing phase trials of new inhibitors and combination therapies are promising in advanced stage patients selected by molecular markers.

Our study showed a potential role of ctDNA in advanced gastric cancer, suggesting ctDNA’s sensitivity in detecting various druggable target genes. Investigation to reveal relationship between ctDNA and clinical outcomes is ongoing.

P2, N=5, Terminated, Shanghai Antengene Corporation Limited | N=48 --> 5 | Trial completion date: Sep 2022 --> May 2022 | Recruiting --> Terminated; Due to the low popularity of NGS testing in China and the small number of target subjects, our company decided to adjust the research and development strategy, terminate this study and not apply for new drug registration after careful consideration.