| This study will be conducted at the Department of Pediatrics, Atal Bihari Vajpayee Institute of
Medical Sciences and Dr Ram Manohar Lohia Hospital.
Children (aged 2 to 18 years) with acute lymphoblastic leukemia due for receiving first highdose methotrexate from 15th April 2024 till 30th June 2025 will be included in the study. Those
children who fulfill the inclusion criteria will be enrolled after taking Written Informed consent
from parents/ caregivers of children and assent of children aged >6 years in their language of
understanding.
After enrolment, Children will be randomised to receive cryotherapy or no cryotherapy. at the
time of first enrolment (before giving first dose of high-dose methotrexate). Allocation
concealment will be done by sealed envelope technique and randomisation will be done using
a random allocation software(www.randomizer.org). Individual patient will be alternated to
receive cryotherapy or no cryotherapy during subsequent courses of high dose methotrexate. The children in the cryotherapy group will be instructed to cool their mouths by keeping ice
popsicles for as long as possible but for minimum of 30 mins every 6 hours in 24 hr
methotrexate infusion period.The popsicles will be made in hospital by pouring mineral water in plastic moulds of ice
popsicles and glucon-d or tang will be added as a flavouring agent. The moulds will then be
kept in the refrigerator(freezer) of the ward and will be ready after 5 hours following which it
will be served to the children of treatment group for cooling their mouth every 6hrs for 30 mins
during the 24-hr high dose methotrexate chemotherapy infusion.
During Oral cryotherapy session, duration will be recorded by the investigator and Patient will
be monitored for development of oral mucositis after completion of 24hr high dose
methotrexate chemotherapy infusion and in case it develops it will be graded using the WHOOral Toxicity Scale by investigator and Parents or Caregivers of Children will be asked to
record symptoms of oral mucositis by using the Children’s International Mucositis Evaluation
Scale (ChIMES. Patients will be asked to maintain a diary after discharge of any symptoms of oral mucositis
and will be told to call up the investigator in case of any symptoms
When the patient comes for subsequent high dose methotrexate chemotherapy, they will be
reviewed for symptoms of oral mucositis.
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