| Literature DB >> 23934762 |
Kerry A Sherman1, Suzanne M Miller, Laura-Kate Shaw, Karen Cavanagh, Sherri Sheinfeld Gorin.
Abstract
Breast cancer is a significant health concern for African American women. Nonetheless, uptake of genetic risk assessment (including both genetic counseling and testing) for breast cancer gene mutations among these populations remains low. This paper systematically reviews cognitive (i.e., beliefs) and affective (i.e., emotions) factors influencing BRCA1/2 genetic risk assessment among African American women as well as psychosocial interventions to facilitate informed decision making in this population. A systematic search of CINAHL, PubMed, and PsycINFO was undertaken, yielding 112 published studies. Of these, 18 met the eligibility criteria. African American woman are likely to participate in genetic risk assessment if they are knowledgeable about cancer genetics, perceive a high risk of developing breast cancer, have low expectancies of stigmatization from medical professionals, view themselves as independent from family, and have fatalistic beliefs and a future temporal orientation. Anticipated negative affective responses, such as an inability to "handle" the results of testing, are barriers to uptake. Specific perceptions, beliefs, and emotional factors are associated with genetic risk assessment among African American women. Understanding these factors is key in the development of interventions to facilitate informed decision making in this population.Entities:
Year: 2013 PMID: 23934762 PMCID: PMC3955455 DOI: 10.1007/s12687-013-0164-y
Source DB: PubMed Journal: J Community Genet ISSN: 1868-310X
Fig. 1Selection of included articles
Characteristics of studies incorporating psychosocial predictors of participation in genetic susceptibility counseling and testing for breast cancer in African American women
| Authors | Number (% AfAm women; Number AfAm women) | Breast cancer risk criteria | Design/methods | Measures | Findings |
|---|---|---|---|---|---|
| Armstrong et al. ( | 408 (17 %; 71) | Family history of breast/ovarian cancer | Case–control study of 408 women, of whom 217 underwent genetic counseling and 191 did not. | Probability of | AfAm women were significantly less likely to receive genetic counseling. Result trends show AfAm women had greater perception of having a |
| Charles et al. ( | 54 (100 %) | 5–10 % probability of having a | Participants were offered genetic testing as part of a RCT which compared the effects of culturally tailored genetic counseling (CTGC) and standard genetic counseling (SGC). Satisfaction was evaluated via a survey following allocation to CTGC or SGC. | Clinical factors, perceived risk of having a | 96 % of women were very satisfied with genetic counseling; however, only 26 % reported that their worries were lessened and 22 % reported that they were able to cope better. Women who received CTGC were significantly more likely than women who received SGC to report that their worries were lessened ( |
| Donovan, Tucker ( | 220 (49 %; 108) | No criteria specified | Cross sectional study. AfAm and Caucasian women completed a survey regarding their knowledge and genetic risk for breast cancer, and their interest in genetic testing. | Perceived risk, knowledge about breast cancer, knowledge about genetic risk for breast cancer, perceived benefits, limitations and risks of genetic testing, and interest in genetic testing. | Caucasian women had significantly more knowledge about breast cancer and genetic testing compared with AfAm women, even when controlling for level of education and income. |
| Durfy et al. ( | 543 (7 %; 36) | Family history of breast cancer | Examined knowledge and opinions about genetic testing for breast cancer risk in women recruited for a RCT of breast cancer risk counseling methods | Familiarity with genetic testing for breast cancer risk, interest in such testing and opinions of it, and anticipated actions based on test results. | Mean perceived risk of study participants was higher than the mean actual risk for all groups. Mean cancer worry scores were similar across all groups. AfAm women were the least likely to have heard about genetic testing. |
| Edwards et al. ( | 140 (56 %; 74) | Personal and/or family history of breast/ovarian cancer | Telephone interviews were conducted to explore the relationship between temporal orientation and the pros and cons of genetic testing. | Temporal orientation, and pros and cons of genetic testing. | Results indicated an association between future orientation and perceived benefits of undergoing testing for both groups. |
| Ford et al. ( | 20 (65 %; 13) | Above average risk | Focus groups were conducted to determine factors influencing perceptions of breast cancer genetic counseling. | Factors (background, cognitive/psychosocial, social, and systematic) influencing perceptions of breast cancer genetic counseling. | AfAm women who received counseling believed they had a “small chance” of developing breast cancer, and believed that changes in lifestyle activities could reduce likelihood of developing the disease. |
| Halbert, Brewster et al. ( | 164 (100 %) | 5–10 % probability of having a | Evaluated the process of recruiting AfAm women into genetic counseling. Women completed baseline interviews followed by genetic counseling prior to genetic testing. | Perceived risk of | Referral from oncology clinics was the only factor significantly associated with participation in genetic counseling; no association between perceived risk and genetic counseling uptake. |
| Halbert, Kessler et al. ( | 141 (100 %) | 5–10 % probability of having a | Examined cancer-specific distress in AfAm women at an increased risk of hereditary breast and ovarian cancer | Distress, history of cancer and avoidance. | AfAm women aged 50 and younger, those who are unemployed and women with a personal history of breast or ovarian cancer may be the most vulnerable to experiencing elevated levels of distress during genetic counseling and testing. |
| Halbert, Kessler, Stopfer et al. ( | 157 (100 %) | 5–10 % probability of having a | Investigated acceptance rates of genetic testing results among AfAm women at increased risk for breast cancer. | Perceived risk of | Women with higher pre-testing beliefs about the probability of being a mutation carrier and those who had less certain beliefs about the certainty of developing cancer were more likely to accept genetic test results. |
| Halbert et al. ( | 198 (100 %) | Minimum 5 % probability of having a | RCT of genetic counseling and testing (2003–2006) to evaluate effects of genetic counseling and testing in AfAm based on different levels of exposure: (a) women who were randomized to culturally tailored (CTGC) and standard genetic counseling (SGC) to women who declined randomization (non-randomized group); (b) participants and non-participants in genetic counseling; and (c) | Perceived risk of developing breast cancer and cancer worry. | Women randomized to CTGC and SGC did not differ in terms of changes in risk perception and cancer worry compared to decliners. |
| Hughes, Gomez-Caminero et al. ( | 407 (24 %; 97) | At least one FDR with breast and/or ovarian cancer; no personal cancer history | Telephone and structured interviews examined women’s knowledge of breast cancer inheritance and attitudes about genetic testing for breast/ovarian cancer susceptibility in women at increased risk. | Ethnicity, genetic testing exposure, knowledge about breast cancer genetics genetic testing, attitudes about the benefits, limitations, and risks of genetic testing. | Compared to Caucasian women, AfAm women had lower levels of knowledge about genetic testing. 23 % of AfAm women rated “concern about the effect on their family” as very important, compared with 13 % of Caucasian women. |
| Hughes, Fasaye et al. ( | 28 (100 %) | Minimum 10-20 % prior probability of having a | Sociocultural influences on participation in genetic testing among AfAm women. Baseline interviews were conducted followed by education sessions and genetic testing. A two week follow-up interview assessed associations between cultural beliefs and values and participation in genetic testing. | Attitudes towards benefits and limitations of genetic testing, fatalistic beliefs about cancer. | Women participating in genetic testing were more likely to have a high level of fatalistic beliefs about cancer, report a future temporal orientation, and view themselves as independent from family members, compared with non-participants. |
| Kessler et al. ( | 74 (100 %) | 5–10 % probability of having a | Evaluated attitudes about the benefits, limitations, and risks of genetic testing. | Clinical factors, beliefs about cancer, perceptions of risk and control, attitudes and intentions regarding genetic testing. | Higher levels of fatalistic beliefs about cancer were associated with greater consideration and uptake of genetic testing. |
| Lerman, Hughes et al. ( | 228 (23 %; 70) | At least one FDR with breast and/or ovarian cancer; no personal cancer history | Telephone interviews in a RCT were used to assess racial differences in responses to pre-test education strategies for | Risk comprehension, genetic testing intention, breast cancer anxiety. | AfAm women benefited from the combined provision of genetic risk information and counseling more than Caucasian women. AfAms who received the education and counseling intervention reported greater intentions to be tested in the future and were more likely to donate a blood sample for storage. |
| Lipkus et al. ( | 266 (100 %) | At least one FDR with breast cancer | Examined relationships among perceptions of, and concern about, getting breast cancer and interest in genetic testing. | Perceptions and attributions of risk, knowledge of risk factors, breast cancer concerns, interest in genetic testing. | Increasing perceptions of breast cancer risks and concerns were related to a greater interest in genetic testing. |
| Matthews, Cummings et al. ( | 21 (62 %; 13) | No criteria specified | Qualitative research. Focus groups were conducted to learn more about factors influencing participation of AfAms in genetic testing. | Level of perceived cancer risk, worries about health, participation in annual cancer screening, discussion of cancer within families, impact of genetic information on medical decision making, knowledge about cancer, and factors affecting decisions to participate in genetic testing. | Several factors influence participation, including perceptions about cancer risk and survivability, lack of awareness about the role of genetic testing, and concern about how to emotionally deal with genetic risk feedback. Concerns about being unable to “handle” testing and results, and feeling overwhelmed by anxiety, cited by women in particular. |
| Thompson, Valdimarsdottir, Duteau-Buck et al. ( | 76 (100 %) | At least one FDR with breast and/or ovarian cancer; no personal cancer history | Investigated predictors for genetic counseling and testing for breast cancer susceptibility. Participants completed a questionnaire, and underwent genetic counseling and genetic testing. | Knowledge of breast cancer, breast cancer-specific emotional distress, perceived benefits and barriers of genetic counseling and testing. | Women declining genetic counseling or testing were less knowledgeable about breast cancer genetics than women receiving genetic counseling and testing. |
| Thompson, Valdimarsdottir, Jandorf et al. ( | 273 (42 %; 115) | No criteria specified | Interviews explored genetic testing attitudes, and determined the extent to which ethnicity, awareness of genetic testing, and medical mistrust is associated with genetic testing attitudes. | Ethnicity, knowledge of genetic testing, medical mistrust, risks and benefits of genetic testing | AfAm women strongly concurred more with concerns about perceived disadvantages (confidentiality and effects on family) and testing abuses (religion), compared with Caucasian women. |
RCT Randomized Controlled Trial, AfAm African American, FDR First-degree relative