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• Journal article
  John AE, Graves RH, Pun KT, Vitulli G, Forty EJ, Mercer PF, Morrell JL, Barrett JW, Rogers RF, Hafeji M, Bibby LI, Gower E, Morrison VS, Man Y, Roper JA, Luckett JC, Borthwick LA, Barksby BS, Burgoyne RA, Barnes R, Le J, Flint DJ, Pyne S, Habgood A, Organ LA, Joseph C, Edwards-Pritchard RC, Maher TM, Fisher AJ, Gudmann NS, Leeming DJ, Chambers RC, Lukey PT, Marshall RP, Macdonald SJF, Jenkins RG, Slack RJet al., 2020,

  Translational pharmacology of an inhaled small molecule alpha v beta 6 integrin inhibitor for idiopathic pulmonary fibrosis

  , Nature Communications, Vol: 11, ISSN: 2041-1723

  The αvβ6 integrin plays a key role in the activation of transforming growth factor-β (TGFβ), a pro-fibrotic mediator that is pivotal to the development of idiopathic pulmonary fibrosis (IPF). We identified a selective small molecule αvβ6 RGD-mimetic, GSK3008348, and profiled it in a range of disease relevant pre-clinical systems. To understand the relationship between target engagement and inhibition of fibrosis, we measured pharmacodynamic and disease-related end points. Here, we report, GSK3008348 binds to αvβ6 with high affinity in human IPF lung and reduces downstream pro-fibrotic TGFβ signaling to normal levels. In human lung epithelial cells, GSK3008348 induces rapid internalization and lysosomal degradation of the αvβ6 integrin. In the murine bleomycin-induced lung fibrosis model, GSK3008348 engages αvβ6, induces prolonged inhibition of TGFβ signaling and reduces lung collagen deposition and serum C3M, a marker of IPF disease progression. These studies highlight the potential of inhaled GSK3008348 as an anti-fibrotic therapy.

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• Journal article
  Molyneaux PL, Smith JJ, Saunders P, Chua F, Wells AU, Renzoni EA, Nicholson AG, Fahy WA, Jenkins RG, Maher TMet al., 2020,

  Bronchoalveolar lavage is safe and well tolerated in individuals with idiopathic pulmonary fibrosis: an analysis of the PROFILE study

  , American Journal of Respiratory and Critical Care Medicine, Vol: 203, Pages: 136-139, ISSN: 1073-449X
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  Leavy O, Ma S-F, Molyneaux P, Maher T, Oldham J, Flores C, Noth I, Jenkins G, Dudbridge F, Wain L, Allen Ret al., 2020,

  Proportion of idiopathic pulmonary fibrosis risk explained by known genetic loci

  Genome-wide association studies have identified 14 genetic loci associated with susceptibility to idiopathic pulmonary fibrosis (IPF), a devastating lung disease with poor prognosis. Of these, the variant with the strongest association, rs35705950, is located in the promoter region of the MUC5B gene and has a risk allele (T) frequency of 30-35% in IPF cases. Here we present estimates of the proportion of disease liability explained by each of the 14 IPF risk variants as well as estimates of the proportion of cases that can be attributed to each variant. We estimate that rs35705950 explains 5.9-9.4% of disease liability, which is much lower than previously reported estimates. Of every 100,000 individuals with the rs35705950_GG genotype we estimate 30 will have IPF, whereas for every 100,000 individuals with the rs35705950_GT genotype 152 will have IPF. Quantifying the impact of genetic risk factors on disease liability improves our understanding of the underlying genetic architecture of IPF and provides insight into the impact of genetic factors in risk prediction modelling.

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