Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-019-0395-3/MediaObjects/40880_2019_395_Fig1_HTML.png)
a Duration of response in patients with IgD subtype or non-IgD subtypes of multiple myeloma, b Kaplan–Meier progression-free survival curves of patients with IgD subtype or non-IgD subtypes of multiple myeloma, c Kaplan–Meier overall survival curves of patients with IgD subtype or non-IgD subtypes of multiple myeloma