PCIB*s sanne ansikt?
Utdrag fra The Lancet:
In The Lancet Oncology , Ahmed Sultan and colleagues
7
present the first clinical study to assess the safety and tolerability of photochemical internalisation for enhancing bleomycin efficacy in a range of cutaneous and subcutaneous lesions in patients with local recurrent or advanced disease. The results of this phase 1, first-in-man, dose-escalation trial of a new photosensitiser, disulfonated tetraphenyl chlorin (TPCS2a), are encouraging. Of particular interest are the findings that the treatment approach seems to be effective in various difficult-to-treat malignancies, including head and neck lesions: across all dose cohorts, at day 28, complete response was achieved in 11 (58%) of 19 patients, partial response in two (11%) patients, stable disease in two (11%) patients, and progressive disease in one (1%) patient. Moreover, similar to results obtained with clinical photodynamic therapy, treatments are well tolerated with only minor complications (eg, localised pain) in most cases. The authors report that grade 3 dose-limiting toxicities were reported in two patients at a TPCS2a dose of 1•5 mg/kg (skin photosensitivity and wound infection), and conclude that the maximum tolerated dose of TPCS2a was 1•0 mg/kg. The minimal normal tissue damage observed following photochemical internalisation suggests that, like photodynamic therapy, there are few barriers to multiple re-treatments. By comparison, re-treatment by conventional means, such as radiotherapy, is problematic. However, a potential limitation of photochemical internalisation for the treatment of head and neck cancers is that, unlike surgery and radiotherapy, it is unlikely to result in successful control of multiple lymphatic metastases and, as such, it is ill suited as a primary treatment modality in most patients with head and neck cancer. Even so, photochemical internalisation could have a role as a primary palliative treatment and in the treatment of patients with early cancers who are at fairly low risk of nodal metastases.
The small scale of this phase 1 trial is a limitation: 22 patients were accrued and only 12 completed the 3-month follow-up. No control groups were included. Additionally, only dose escalation of the photosensitiser (TPCS2a) was considered. Admittedly, many variables exist that could be considered in studies of photochemical internalisation; however, it would certainly be useful to investigate dose escalations of both bleomycin and light, since these factors can have a substantial effect on treatment efficacy. The finding of complete responses for large tumours (thicknesses of 35 mm) is somewhat surprising in view of the limited penetration depth of 652 nm light. The investigators postulate that this might be a result of photochemical internalisation-induced immune responses akin to those seen with photodynamic therapy;
8
however, this theory is somewhat speculative and will certainly require more thorough investigation in future studies.
Overall, the results of this phase 1 clinical study are intriguing because they suggest that photochemical internalisation might have a role in the treatment of early lesions and palliation of advanced disease, especially in the head and neck region. These findings provide the basis for further studies.
Blir en ikke imponert av dette så …
Klippet ut:
Of particular interest are the findings that the treatment approach seems to be effective in various difficult-to-treat malignancies, including head and neck lesions: across all dose cohorts, at day 28, complete response was achieved in 11 (58%) of 19 patients, partial response in two (11%) patients, stable disease in two (11%) patients, and progressive disease in one (1%) patient. Moreover, similar to results obtained with clinical photodynamic therapy, treatments are well tolerated with only minor complications (eg, localised pain) in most cases. The authors report that grade 3 dose-limiting toxicities were reported in two patients at a TPCS2a dose of 1•5 mg/kg (skin photosensitivity and wound infection), and conclude that the maximum tolerated dose of TPCS2a was 1•0 mg/kg.
Jævla drittpandemi som skal rote det så mye til…
Lykke til
Det er helt utrolig-se på dette herane da og det er uten dobbel behandling .
I GGK pasienter som er bokstavelig talt “dausjuke”
"at day 28, complete response was achieved in 11 (58%) of 19 patients, partial response in two (11%) patients, stable disease in two (11%) patients, and progressive disease in one (1%) patient. "
Det er jo nesten ikke til å tro , i en indikasjon som er helt umulig å hanskes med og gå fra dette stediet til CR , ikke for en eller to men for 58% og det i tillegg med enkel dosering , ikke som i dag hvor RELEASE gir dobbel behandling.
Dette er hva de kan bruke av kraftutblåsninger ,
LOVENDE, hehe .
Noen som har rapportene fra H&N studiene som Berge skulle publisere fra denne H&N studien hvorledes svulstene utviklet seg?
Det var vel i podcasten til eriksson
https://soundcloud.com/user-972208711/episode-104
Denne er serdeles underholdende og anbefales , virkelig.