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Theralase Technologies Inc. V.TLT

Alternate Symbol(s):  TLTFF

Theralase Technologies Inc. is a Canada-based clinical-stage pharmaceutical company. The Company is engaged in the research and development of light activated compounds and their associated drug formulations. The Company operates through two divisions: Anti-Cancer Therapy (ACT) and Cool Laser Therapy (CLT). The Anti-Cancer Therapy division develops patented, and patent pending drugs, called Photo Dynamic Compounds (PDCs) and activates them with patent pending laser technology to destroy specifically targeted cancers, bacteria and viruses. The CLT division is responsible for the Company’s medical laser business. The Cool Laser Therapy division designs, develops, manufactures and markets super-pulsed laser technology indicated for the healing of chronic knee pain. The technology has been used off-label for healing numerous nerve, muscle and joint conditions. The Company develops products both internally and using the assistance of specialist external resources.


TSXV:TLT - Post by User

Comment by Pandoraon Nov 04, 2022 2:35pm
212 Views
Post# 35074003

RE:Another look at the data

RE:Another look at the data
Eoganacht wrote: There's nothing really new here. I'm just obsessing over the numbers while we wait. The table below is from the MD&A from the end of August. I have added the number of patients beside the percentages and included the "No Response" patients. This table includes the 3 full dose patients from phase 1 (2 CRs and 1 NR) Out of 24 patients evaluated at 450 days there were 21% CR and 13% PR for a Total Response rate of 33%

Assessment Days 90 Days 180 Days 270 Days 360 Days 450 Days
  % # of patients % # of patients % # of patients % # of patients % # of patients
Complete Response 50% 19 47% 16 41% 13 35% 9 21% 5
Partial Response 16% 6 26% 9 22% 7 12% 3 13% 3
Total Response 66% 25 74% 25 63% 20 46% 12 33% 8
No Response 34% 13 26% 9 37% 12 54% 14 67% 16
Evaluable Patients 38 34 32 26 24

If we remove the 3 phase 1 patients from the table (2 CRs and 1 NR) we have the results for 21 patients evaluated at 450 days. Of these there were 14% CR and 14% PR and a Total Response rate of 29%

Assessment Days 90 Days 180 Days 270 Days 360 Days 450 Days
  % # of patients % # of patients % # of patients % # of patients % # of patients
Complete Response 49% 17 45% 14 38% 11 30% 7 14% 3
Partial Response 17% 6 29% 9 24% 7 13% 3 14% 3
Total Response 66% 23 74% 23 62% 18 43% 10 29% 6
No Response 34% 12 26% 8 38% 11 57% 13 71% 15
Evaluable Patients 35 31 29 23 21

The data submission to the FDA of 450 day results for the first 25 phase 2 patients will incude the results of 4 more patients. The best case scenario would be if all 4 were CR. This would be a 450 day CR rate of 28% and a total response rate of 40%.

Assessment Days 450 Days
  % # of patients
Complete Response 28% 7
Partial Response 12% 3
Total Response 40% 10
No Response 60% 15
Evaluable Patients 25

But there's really no reason not to include the 3 full dose patients from the phase 1 trial. Theralase will be submitting complete 450 day data on 28 evaluated patients. The best case scenario for the 28 is a 450 day CR rate of 32% and a total response rate of 43%. It should also be kept in mind that this submission represents 450 day results for only 25% of the patients who will be treated in this trial, and half of that 25% was undertreated. The results of the (at least) 75 patients yet to reach 450 days should significantly improve the numbers. There is also the possibility that the 3 NR patients will be reclassified CR which would mean a possible 450 day CR rate of 40% for the 25 patients and 43% for the 28 patients.

Assessment Days 450 Days
  % # of patients
Complete Response 32% 9
Partial Response 11% 3
Total Response 43% 12
No Response 57% 16
Evaluable Patients 28



I keep trying to rationalize the NR (No Response) number. Maybe I was spoiled by the Phase 1b study. How do you rationalize a No Response of 16 patients? 12 give a response yet 16 give "no" response? Or is there more to it than that?
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