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Interpretation of Melanoma Risk Feedback in First-Degree Relatives of Melanoma Patients

机译:黑色素瘤患者一级亲属中黑色素瘤风险反馈的解释

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摘要

Little is known about how individuals might interpret brief genetic risk feedback. We examined interpretation and behavioral intentions (sun protection, skin screening) in melanoma first-degree relatives (FDRs) after exposure to brief prototypic melanoma risk feedback. Using a 3 by 2 experimental pre-post design where feedback type (high-risk mutation, gene environment, and nongenetic) and risk level (positive versus negative findings) were systematically varied, 139 melanoma FDRs were randomized to receive one of the six scenarios. All scenarios included an explicit reminder that melanoma family history increased their risk regardless of their feedback. The findings indicate main effects by risk level but not feedback type; positive findings led to heightened anticipated melanoma risk perceptions and anticipated behavioral intentions. Yet those who received negative findings often discounted their family melanoma history. As such, 25%, 30%, and 32% of those who received negative mutation, gene-environment, and nongenetic feedback, respectively, reported that their risk was similar to the general population. Given the frequency with which those who pursue genetic testing may receive negative feedback, attention is needed to identify ideal strategies to present negative genetic findings in contexts such as direct to consumer channels where extensive genetic counseling is not required.
机译:关于个人如何解释短暂的遗传风险反馈知之甚少。在暴露于简短的原型黑素瘤风险反馈后,我们检查了黑素瘤一级亲属(FDR)的解释和行为意图(防晒,皮肤筛查)。使用反馈设计(高风险突变,基因环境和非遗传)和风险水平(阳性结果与阴性结果)进行系统地改变的三乘二实验前设计,将139个黑色素瘤FDR随机分配为六个方案之一。所有情况都明确提醒我们,无论反馈如何,黑素瘤家族史都会增加患病风险。研究结果表明,主要影响因素是风险水平,而不是反馈类型。积极的发现导致人们对黑色素瘤的风险预期和行为意图有所提高。然而,那些获得阴性结果的人常常轻视他们的家庭黑色素瘤病史。因此,分别接受负突变,基因环境和非遗传反馈的人群中,分别有25%,30%和32%的人报告其风险与普通人群相似。考虑到进行基因检测的人可能会收到负面反馈的频率,因此需要注意确定理想的策略,以便在不需要广泛遗传咨询的情况下直接向消费​​者渠道等情况下呈现负面遗传发现。

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