Primary study · included by 1 review

Studying the association between methylenetetrahydrofolate reductase (MTHFR) 677 gene polymorphism, cardiovascular risk and lichen planus.

Rashed 2017 · Rashed Laila, Abdel Hay Rania, AlKaffas Marwa, et al. · Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology · 2017

Included by

Relationship Between Anemia and Oral Lichen Planus: New Therapeutic Perspectives Based on Anemia Management-A Systematic Review and Meta-Analysis.

Non-Cochrane · aetiology · 2026 · cited as Rashed 2017 · Table 1; Figures 3-8

Outcome this study informs	Pooled effect	Evidence	Certainty
Serum vitamin B12 concentration Presence of OLP vs Healthy adults without OLP	MD -91.38 [-218.22, 35.47]	5 studies · 1877 participants	GRADE not reported
Serum folic acid concentration Presence of OLP vs Healthy adults without OLP	MD -4.28 [-7.83, -0.74]	4 studies · 1910 participants	GRADE not reported

1 including review in total.