Follow-up of patients given isoniazid prophylaxis in multiple myeloma patients underwent autologous stem cell transplantation

Aims: With the developments in recent years, multiple myeloma (MM) a plasma cell discrazy has become a disease whose life expectancy is expressed in 10 years. Stem cell transplantation still maintains its place in this disease and post-transplant prophylaxis is important. One of these is antituberculosis prophylaxis. We wanted to introduce this barren subject. Methods: A retrospective screening of patients with MM who were started on isoniazid (INH) prophylaxis and underwent autologous stem cell transplantation was planned. Results: Antituberculosis prophylaxis was given to 25 patients (6.5%) out of 380 MM transplant patients. PPD skin test was positive in 20 of the patients who were given INH prophylaxis. 15 patients had pulmonary findings compatible with latent tuberculosis infection. Ten patients had both. No patients progressed to active tuberculosis. There was no difference between those who used INH/not in terms of obtaining CR or VGPR and other responses (p=0.220). And there was no survival difference between INH users and others. Conclusion: Follow-up of patients receiving INH prophylaxis is also important. Histopathological findings obtained with autopsy of myeloma patients who died with pneumonia after autologous transplantation with INH prophylaxis will answer the question of whether it was tuberculosis.