1. Bordano, Valentina, Kinsella, Gemma K, Cannito, Stefania, Findlay, John B C, Benetti, Elisa. 2022. G protein-coupled receptor 21 in macrophages: An in vitro study. In European journal of pharmacology, 926, 175018. doi:10.1016/j.ejphar.2022.175018. https://pubmed.ncbi.nlm.nih.gov/35537492/
2. Gutiérrez-Ruiz, Juan René, Villafaña, Santiago, Ruiz-Hernández, Armando, Hong, Enrique, Romero-Nava, Rodrigo. 2022. Expression profiles of GPR21, GPR39, GPR135, and GPR153 orphan receptors in different cancers. In Nucleosides, nucleotides & nucleic acids, 41, 123-136. doi:10.1080/15257770.2021.2002892. https://pubmed.ncbi.nlm.nih.gov/35021931/
3. Riddy, Darren M, Kammoun, Helene L, Murphy, Andrew J, Delerive, Philippe, Langmead, Christopher J. . Deletion of GPR21 improves glucose homeostasis and inhibits the CCL2-CCR2 axis by divergent mechanisms. In BMJ open diabetes research & care, 9, . doi:10.1136/bmjdrc-2021-002285. https://pubmed.ncbi.nlm.nih.gov/34782333/
4. Romero-Nava, Rodrigo, García, Noemí, Aguayo-Cerón, Karla Aidee, Hong, Enrique, Villafaña, Santiago. 2020. Modifications in GPR21 and GPR82 genes expression as a consequence of metabolic syndrome etiology. In Journal of receptor and signal transduction research, 41, 38-44. doi:10.1080/10799893.2020.1784228. https://pubmed.ncbi.nlm.nih.gov/32583711/
5. Wang, Jinghong, Pan, Zheng, Baribault, Helene, Gundel, Caroline, Véniant, Murielle. 2016. GPR21 KO mice demonstrate no resistance to high fat diet induced obesity or improved glucose tolerance. In F1000Research, 5, 136. doi:10.12688/f1000research.7822.2. https://pubmed.ncbi.nlm.nih.gov/27081476/
6. Leonard, Siobhán, Kinsella, Gemma K, Benetti, Elisa, Findlay, John B C. 2016. Regulating the effects of GPR21, a novel target for type 2 diabetes. In Scientific reports, 6, 27002. doi:10.1038/srep27002. https://pubmed.ncbi.nlm.nih.gov/27243589/
7. Gardner, Jonitha, Wu, Sue, Ling, Lei, Tian, Hui, Baribault, Hélène. 2011. G-protein-coupled receptor GPR21 knockout mice display improved glucose tolerance and increased insulin response. In Biochemical and biophysical research communications, 418, 1-5. doi:10.1016/j.bbrc.2011.11.117. https://pubmed.ncbi.nlm.nih.gov/22155242/
8. Martin, Adam L, Steurer, Michael A, Aronstam, Robert S. 2015. Constitutive Activity among Orphan Class-A G Protein Coupled Receptors. In PloS one, 10, e0138463. doi:10.1371/journal.pone.0138463. https://pubmed.ncbi.nlm.nih.gov/26384023/