2020
DOI: 10.3390/cancers13010048
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Hyper-Progressive Disease: The Potential Role and Consequences of T-Regulatory Cells Foiling Anti-PD-1 Cancer Immunotherapy

Abstract: Antibody-mediated disruption of the programmed cell death protein 1 (PD-1) pathway has brought much success to the fight against cancer. Nevertheless, a significant proportion of patients respond poorly to anti-PD-1 treatment. Cases of accelerated and more aggressive forms of cancer following therapy have also been reported. Termed hyper-progressive disease (HPD), this phenomenon often results in fatality, thus requires urgent attention. Among possible causes of HPD, regulatory T-cells (Tregs) are of suspect d… Show more

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Cited by 24 publications
(22 citation statements)
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“…These findings also indicate that the combination of CCR8-targeted selective Treg depletion and immune checkpoint blockade, which aims to block negative signals to effector Tconvs, would enable a synergy in tumor immunity, as shown in this and other reports ( 36 , 37 , 39 , 49 ). Moreover, Treg depletion would prevent hyperprogressive disease (HPD), which is a rapid cancer progression occasionally observed in the course of anti–PD-1 mAb treatment ( 50 , 51 ). The occurrence of HPD is correlated well with the degree of the proliferation of PD-1 + Tregs in tumor tissues during anti–PD-1 mAb treatment; furthermore, PD-1 blockade drives Tregs to proliferate in vivo and in vitro, potentiating Treg-suppressive activity ( 24 , 25 ).…”
Section: Discussionmentioning
confidence: 99%
“…These findings also indicate that the combination of CCR8-targeted selective Treg depletion and immune checkpoint blockade, which aims to block negative signals to effector Tconvs, would enable a synergy in tumor immunity, as shown in this and other reports ( 36 , 37 , 39 , 49 ). Moreover, Treg depletion would prevent hyperprogressive disease (HPD), which is a rapid cancer progression occasionally observed in the course of anti–PD-1 mAb treatment ( 50 , 51 ). The occurrence of HPD is correlated well with the degree of the proliferation of PD-1 + Tregs in tumor tissues during anti–PD-1 mAb treatment; furthermore, PD-1 blockade drives Tregs to proliferate in vivo and in vitro, potentiating Treg-suppressive activity ( 24 , 25 ).…”
Section: Discussionmentioning
confidence: 99%
“…Other somatic mutations and carcinogenic pathways exist in addition to MDM2 amplification and EGFR mutations. Xiong et al [61] evaluated the mutational and transcriptional characteristics of tumors before and after anti-PD-1 immunotherapy in two patients who acquired HPD. Somatic mutations in recognized cancer genes, including tumor suppressor genes such as TSC2 and VHL, were discovered, as well as transcriptional activation of carcinogenic pathways including IGF-1, ERK/MAPK, PI3K/AKT, and TGFβ.…”
Section: Mdm2/mdm4 Amplification and Egfr Mutationmentioning
confidence: 99%
“…174 The second involves the infiltration of Treg cells into tumors, due to their high level of PD-1 expression, which modulates Treg activity. 175 While blocking the inhibitory signals of PD-1 increases Treg cell activation, Treg cells may still require IL-2 for robust proliferation. 176 One may expect HPD caused by Treg cell expansion to have a shorter time to progression and to be prone to metastasis.…”
Section: Cd8 + T-cell (Ctl/killer T-cell) and T-cell Exhaustion Tils Can Be Broadly Classified As Effector Memory T-cells Central Memory mentioning
confidence: 99%