Background: Genetic variants of TOLLIP and MUC5B, both on chromosome 11, have been reported to be associated with the development and/or prognosis of idiopathic pulmonary fibrosis (IPF). This retrospective study was conducted to investigate the association of MUC5B and TOLLIP SNPs with disease outcome in IPF. 62 IPF patients and 50 healthy controls (HC) from our Institution were genotyped for SNPs within MUC5B (rs35705950) and TOLLIP (rs3750920 and rs5743890). Correlation of SNPs genotypes with survival, acute exacerbation (AE) or disease progression (defined as a decline of ≥ 5% in FVC and or >10% in DLco in one year) was investigated.Results: The MUC5B rs35705950 minor allele (T) was more frequent in IPF subjects than in HC (35% vs 9% p<0.001). TOLLIP SNPs alleles and genotype distribution did not differ between IPF and HC and did not vary according to gender, age, BMI and lung functional impairment at baseline. The minor allele (C) in TOLLIP rs5743890 was associated with worse survival and with disease progression in all performed analyses. The MUC5B rs35705950 or the TOLLIP rs3750920 minor allele, were not associated with disease progression or acute exacerbation. Conclusion: We confirm that the minor allele of MUC5B rs35705950 is associated with IPF. The minor allele of TOLLIP rs5743890 appears to be a predictor of worse survival and more rapid disease progression, therefore being of potential utility to stratify IPF patients at baseline.

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A differentiation between a vestibular schwannoma and a mere cochlear hearing disorder with only the help of CLS and DPOAE I/O-functions is not possible. The results corroborate the thesis of an additional cochlear component even in small vestibular schwannoma. The implementation of CLS to determine cochlear deficits linked to vestibular schwannoma seems to be medically sensible if the tumor size exceeds 5 mm. According to the diagnostic method used to determine vestibular schwannoma MRI remains the first choice procedure.

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