Table 1.

Characteristics of OPG is NF1 and non-NF1 patients.

NF1 patients	Non-NF1 patients
Earlier age of presentation (age 3–6 years)	Can present anywhere throughout childhood
Tumor location tends to be more anterior and potentially involve only the nerve	Tumor location can be more posterior
50%–70% aysmptomatic	More likely to cause clinical symptoms/visual impairment
NF1 favorable prognostic marker	BRAF-KIAA fusion is favorable prognostic marker
Less likely to progress	More likely to progress
Only approx. 35% require treatment	>90% of patients will require treatment