Has anyone had CXCR4 testing for Waldenström's macroglobulinemia?

Hi There, I was diagnosed with WM in September, 2023, when a shoulder MRI revealed a bone marrow lesion in my humerus. Biopsy of the lesion showed MYD88 L265P. I completed a 4-week course of rituximab, followed by ibrutinib daily for about 2 weeks. I had a severe reaction to the ibrutinib and was hospitalized with acute encephalopathy for 6 days. My disease burden is considered low as a subsequent bone marrow biopsy showed a 5 to 10 percent disease burden. My IgM has always been under 1500. However, I continue to be symptomatic, and my IgM continues to rise slowly. I am not currently in treatment and am in the "watch and wait" mode. Has anyone had next generation sequencing for CXCR4? It is not yet commonly done with original bone marrow biopsy.