RE: SDC-1802 in cancer?14 Feb 2023 14:06
MOLT-4 is a T lymphoblast cell line derived from the same patient as the MOLT-3 cell line (ATCC CRL-1552). The line was established from cells taken from a 19-year-old, male patient with Acute lymphoblastic leukemia (ALL) in relapse ( basic description here)
Background of the Invention ( Yes 1802)
T-Cell Acute Lymphoblastic Leukaemia (T-ALL) is a rare type of leukaemia that usually occurs in late childhood or early adolescence and is significantly more common in boys than girls. T-ALL is estimated to account for 10% to 15% of pediatric acute lymphoblastic leukaemia (ALL) cases and around 200 people are diagnosed with T-ALL in the UK every year. It is aggressive and progresses quickly: about 30% of T-ALL patients relapse within the first year during or following treatment and eventually die.
Current therapy for T-ALL consists of three stages: Remission induction, consolidation, and maintenance. Remission induction is intended to rid the blood and bone marrow of leukaemia cells, requires intensive chemotherapy and involves a hospital stay of approximately 1 month. Different combinations of chemotherapy may be used, but typically involve vincristine, dexamethasone or prednisone, and doxorubicin or daunorubicin (or a similar anthracycline). Depending on the patient's prognostic factors, regimens may additionally involve cyclophosphamide, etoposide and/or high doses of methotrexate or cytarabine. These intensive treatments kill off many of the normal bone marrow cells as well as the leukaemia cells, thus serious infections or other complications can occur during this phase. CNS treatment or prophylaxis is often started during the induction phase. Most often this involves intrathecal chemotherapy (most commonly methotrexate), potentially alongside high-dose IV methotrexate or cytarabine, and radiation therapy to the brain and spinal cord.
SDC compound
SD C1802 compound. From patent description.
Mice given Molt 4 as vehicle
Cyclophosphamide is a medication used as chemotherapy and to suppress the immune system. (In this sense in combo)
Results below. ( vastly shortened)
At the end of the study period T/C (test versus control) values were 26.2% for cyclophosphamide,
16.6% for Compound 29 50mg/kg BID,
26.8% for Compound 29 25mg/kg BID and
-2.1 % for the combination group.
' All treatment groups show significant anti-cancer activity as defined by the NCI, which states that any compound which has a T/C value of less than or equal to 42% has demonstrated significant anti-cancer activity.'
Very impressive in combo ie '2.1%' with a drug first approved for use in late 60's .
Whilst a predefined indication it in no way limits 1802 to T ALL. As from the above results it does indicate its efficacy in this particular type of cancer.
Regards