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In the current proceedings, we summarise the results presented during the mmUniverse@NIKA2 conference, taken from our main results in\cite{Haridasu:2021hzq}. We test the Degenerate higher-orderscalar-tensor(DHOST) theory as a generalised platform for scalar-tensor theoryat galaxy cluster scales to predict in such static systems small scalemodification to the gravitational potential. {DHOST theory is not only a goodalternative to $\Lambda$CDM for the background evolution but also predictssmall-scale modification to the gravitational potential in static systems suchas galaxy clusters.} With a sample of 12 clusters with accurate X-ray IntraCluster Medium (ICM) data (X-COP project) and Sunyaev-Zel'dovich (SZ) ICMpressure (Planck satellite), we place preliminary constraints on the DHOSTparameters defining the deviation from GR. Moreover, we also collect a fewsupplementary analyses we have performed during the course: i) Gaussian processreconstruction without parametric assumptions, ii) $\Psz$-only data analysisnot aided by the X-ray data. Finally, we present possible extensions to thecurrent work which may benefit from future high sensitivity and spatialresolution observations such as the ongoing NIKA2 camera.

Generalised scalar-tensor theories of gravity and pressure profiles of galaxy clusters