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Table 3 NF1 score clinical score for predicting internal neurofibromas in adults

From: Neurofibromatosis 1 French national guidelines based on an extensive literature review since 1966

NF1 score
Independent factors associated with the presence of internal NFsPoints
Age ≤ 30 years10
Absence of cutaneous NFs10
≥ 2 subcutaneous NFs15
<  6 café-au-lait macules5
Probabilities of the presence of internal neurofibromas according to the NF-1Score
 NF1- ScoreProbability (%)
 05.1
 58.3%
 1013.3%
 1520.7%
 2030.8%
 2543%
 3056.1%
 3568.4%
 4078.7%