Aavikko
等。(
17)提出了一个类似的与我们的家庭,一个错义
SUFU变体,c。367 c > T, p。Arg123Cys,导致的一个重要情感SUFU蛋白质的功能。他们的研究提出了五个家庭成员与脑膜瘤和LOH
SUFU基因被发现在所有的脑膜瘤。研究对象没有基底细胞癌或其他GS的表现。作者推测,脑膜瘤的风险增加有关错义变化和由于一些剩下的活动SUFU病例没有发展成神经管细胞瘤。此外,Huq
等。(
8)的情况下
SUFUc。1365+2T>A variant resulting in a truncated protein. The study subjects, four siblings, had a history of multiple BCCs, first BCC 40-55 years old. They all had calcification of falx cerebri. One of the subjects had a history of meningioma, but no genetic testing of the meningioma was mentioned. Kijima
等。(
18)也提出了一个案例,一个无稽之谈
SUFUc。550C>T, Gln184Ter variant resulted in amongst other conditions: medulloblastoma, multiple BCCs, and meningioma. However, they did not find LOH of the
SUFU来自脑膜瘤的基因和成神经管细胞瘤病人接受放射治疗。可以认为,符合Aavikko的假说
等。(
17)的严重程度
SUFU变体规定表型;即。,a truncated protein without function leads to a condition with multiple BCCs and increased risk of developing meningiomas and medulloblastomas, whereas partial function is associated with an increased risk of developing meningiomas. If this holds true, our study family should have had a high risk of developing childhood medulloblastomas. However, another possibility is that the difference in phenotype between these case series was due to multilayered variants in genes related to the hedgehog pathway as hypothesized by Onodera
等。(
10),辐射,可能色素基因。在Onodera et al。4 GS患者的研究
PTCH1变体他们发现所有患者额外的变异基因相关hedgehog途径(
10]。