Ø Type and amount of chemotherapy received by patient prior to mobilization

Ø Old age (>60 years)

Ø History of Radiation therapy

Ø Short interval period between chemotherapy and mobilization

Ø Extensive disease

Ø Bone marrow involvement

Ø Use of immunomodulator like Lenalidomide

Ø Poor marrow function (e.g., low platelet and CD34+ cell blood count) at time of mobilization