KR20230087971A - 알츠하이머 진단을 위한 정보제공방법 - Google Patents
알츠하이머 진단을 위한 정보제공방법 Download PDFInfo
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Abstract
본 발명이 제공하는 알츠하이머 진단을 위한 정보제공방법에 따르면 매우 높은 민감도와 특이도로 질환을 진단할 수 있다.
Description
도 2는 도출된 알고리즘 계산식으로 임상검체 NDC(정상군) 56명과 AD(알츠하이머군) 69명의 위험도(risk value)의 수치를 이용하여 알츠하이머 진단의 민감도, 특이도, PPV(양성예측도), NPV(음성예측도)를 확인하고 이의 ROC를 나타낸 것이다.
Claims (8)
- (a) 생물학적 시료에서 TTR(Transthyretin) 및 C3(Complement C3) 단백질 또는 이를 암호화하는 유전자의 발현 수준을 측정하는 단계; 및
(b) 상기 각 단백질 또는 유전자의 발현 수준을 하기 수학식에 대입하여 알츠하이머 위험도를 산출하는 단계를 포함하는, 알츠하이머 진단 또는 예후 예측을 위한 정보 제공방법:
[수학식]
위험도 = a ⅹ [TTR] + b ⅹ [C3] + c
(상기 수학식에서, -0.1 < a < -0.005, 0.00005 < b < 0.001, 0.5 < c < 5.0 이며,
[TTR] 및 [C3]는 각각 단백질 또는 유전자의 발현값이다.)
- 제1항에 있어서, 상기 생물학적 시료는 혈액, 혈구, 뇌 조직, 신경세포, 뇌척수액, 타액, 비액, 객담, 관절낭액, 양수, 복수, 자궁경부 분비물, 질 분비물 및 소변으로 이루어진 군에서 선택되는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 수학식에 따른 위험도가 cut-off 값 이상인 경우 알츠하이머 환자로 예측하는 것을 특징으로 하는 방법.
- 제4항에 있어서, 상기 cut-off 값은 1.5 내지 2.0 사이의 임의의 값인 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 수학식은 다음과 같은 것을 특징으로 하는 방법:
[수학식]
위험도 = - 0.02232632 ⅹ [TTR] + 0.00019517 ⅹ [C3]+1.742
(상기 수학식에서, [TTR] 및 [C3]는 각각 단백질 또는 유전자의 발현값이다.)
- 제6항에 있어서, 상기 수학식에 따른 위험도가 1.8 이상인 경우 알츠하이머 환자로 예측하는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 수학식에 따른 알츠하이머 진단의 ROC (Receiver operating characteristic)의 곡선 하 면적(AUC)은 0.7 이상인 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 각 단백질 또는 유전자의 발현 수준은 표준 단백질 또는 표준 유전자이 발현에 대해 정규화된 발현 수준인 것을 특징으로 하는 방법.
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