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. 2022 Sep 15;14(18):3805. doi: 10.3390/nu14183805

Table 2.

Summary of studies reviewed.

Type of Study Number Type of Case Number Method of Delivery of Synthetic Vitamin D or D3 * Number Type of Photosensitizer Number
human studies 9 actinic keratoses 5 ointment/cream 11 5-ALA 11
in vitro cell line 5 squamous cell skin cancers 3 application to the cell solution 5 MAL 6
animal studies 5 breast cancer cell line 2 systemic/intraperitoneally 3 Other 2
glioma cell lines 1 oral/diet 2
psoriasis 1
other
(individual cases)
7

*—two studies reported two types of application.