Think this qualifies as a correct answer. Btw, found http://www.genome.jp/dbget-bin/www_bget?hsa04978 as the top hit with google. What you choose as "iron pathway" is vastly arbitrary. You can extend this pathway to include:
- iron uptake receptors and transport
- iron containing proteins (include heme and heme binding proteins?)
- iron storage proteins, e.g. ferritin
- iron regulatory proteins (e.g. IRP)
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If you were interested in the genes/diseases with that phenotype in mind, you could explore the Platform for drug identification in Open Targets. You could search for iron metabolism, and find the diseases and genes where the search term matches to (at the moment we've got 222 targets associated with iron metabolism, only one based on 'Affected pathways' i.e. CP. You can also explore CP for more information including 'Pathways', with the one highlighted by @b.nota plus two others.
The hyperlinked 'Open Targets' should take you to this Biostars post instead.
How to understand the concept: iron biomarker measurement?