Loss-of-function mutations in filaggrin gene and malignant melanoma: a case-control study

TY - JOUR

T1 - Loss-of-function mutations in filaggrin gene and malignant melanoma

T2 - a case-control study

AU - Thyssen, J P

AU - Andersen, Y M F

AU - Balslev, E

AU - Szecsi, P B

AU - Stender, S

AU - Kaae, J

AU - Linneberg, A

AU - Skov, Lone

N1 - © 2017 European Academy of Dermatology and Venereology.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - BACKGROUND: Loss-of-function mutations in filaggrin gene (FLG) have been suggested to increase the susceptibility of skin malignancies due to reduced levels of epidermal filaggrin and its degradation products, urocanic acid, which may be protective against ultraviolet irradiation.OBJECTIVE: We aimed to investigate the association between FLG mutation status and the occurrence of malignant melanoma (MM) in Danish adults.METHODS: The prevalence of FLG mutations in a sample of MM biopsies was compared with a FLG-genotyped cohort from two general population studies. Pearson's chi-squared and Fisher's exact tests were used to compare the two groups.RESULTS: A total of 867 MM biopsies and 9965 general population controls were genotyped, respectively. In the MM sample, two (0.23%) individuals were homozygous and 80 (9.4%) were heterozygous mutation carriers. In the general population controls, the prevalence of FLG mutations was 18 (0.18%) and 835 (8.4%) for homozygous and heterozygous mutations, respectively. Fisher's exact test and Pearson's chi-squared test yielded non-significant P-values when the groups were compared.CONCLUSION: FLG mutation was not associated with MM in the studied populations. This finding indicates that epidermal deficiency of filaggrin and its degradation products does not influence the risk of MM significantly.

AB - BACKGROUND: Loss-of-function mutations in filaggrin gene (FLG) have been suggested to increase the susceptibility of skin malignancies due to reduced levels of epidermal filaggrin and its degradation products, urocanic acid, which may be protective against ultraviolet irradiation.OBJECTIVE: We aimed to investigate the association between FLG mutation status and the occurrence of malignant melanoma (MM) in Danish adults.METHODS: The prevalence of FLG mutations in a sample of MM biopsies was compared with a FLG-genotyped cohort from two general population studies. Pearson's chi-squared and Fisher's exact tests were used to compare the two groups.RESULTS: A total of 867 MM biopsies and 9965 general population controls were genotyped, respectively. In the MM sample, two (0.23%) individuals were homozygous and 80 (9.4%) were heterozygous mutation carriers. In the general population controls, the prevalence of FLG mutations was 18 (0.18%) and 835 (8.4%) for homozygous and heterozygous mutations, respectively. Fisher's exact test and Pearson's chi-squared test yielded non-significant P-values when the groups were compared.CONCLUSION: FLG mutation was not associated with MM in the studied populations. This finding indicates that epidermal deficiency of filaggrin and its degradation products does not influence the risk of MM significantly.

KW - Journal Article

U2 - 10.1111/jdv.14532

DO - 10.1111/jdv.14532

M3 - Letter

C2 - 28833578

SN - 0926-9959

VL - 32

SP - 242

EP - 244

JO - Journal of the European Academy of Dermatology and Venereology

JF - Journal of the European Academy of Dermatology and Venereology

IS - 2

ER -