What is the evidence for subcutaneous mistletoe extract in the treatment of cancer?

Source: Regional Drug and Therapeutics Centre Area: Evidence > Medicines Q & A Whilst in vitro testing has been promising, showing a number of mechanisms by which mistletoe may be helpful in cancer treatment, clinical evidence of the effectiveness of mistletoe preparations is lacking. There are no licensed mistletoe products available in the UK.   Until more high quality evidence is available, there is currently no compelling evidence to support the use of mistletoe extracts in cancer therapy.   Currently available positive evidence is confounded by poor study design, with more high quality trial data suggesting little or no difference in those treated with mistletoe.
Source: NeLM - Medicines Q and A - Category: Drugs & Pharmacology Source Type: news