We have conducted a genome screen of autism, by linkage analysis in an initial set of 90 multiplex sibships, with parents, containing 97 independent affected sib pairs (ASPs), with follow-up in 49 additional multiplex sibships, containing 50 ASPs. In total, 519 markers were genotyped, including 362 for the initial screen, and an additional 157 were genotyped in the follow-up. As a control, we also included in the analysis unaffected sibs, which provided 51 discordant sib pairs (DSPs) for the initial screen and 29 for the follow-up. In the initial phase of the work, we observed increased identity by descent (IBD) in the ASPs (sharing of 51.6%) compared with the DSPs (sharing of 50.8%). The excess sharing in the ASPs could not be attributed to the effect of a small number of loci but, rather, was due to the modest increase in the entire distribution of IBD. These results are most compatible with a model specifying a large number of loci (perhaps >/=15) and are less compatible with models specifying =10 loci. The largest LOD score obtained in the initial scan was for a marker on chromosome 1p; this region also showed positive sharing in the replication family set, giving a maximum multipoint LOD score of 2.15 for both sets combined. Thus, there may exist a gene of moderate effect in this region. We had only modestly positive or negative linkage evidence in candidate regions identified in other studies. Our results suggest that positional cloning of susceptibility loci by linkage analysis may be a formidable task and that other approaches may be necessary.
Supportive-expressive therapy, with its emphasis on providing support and helping patients face and deal with their disease-related stress, can help reduce distress in patients with metastatic breast cancer.
BACKGROUND. This study was designed to replicate our earlier finding that intensive group therapy extended survival time of women with metastatic breast cancer. Subsequent findings concerning the question of whether such psychosocial support affects survival have been mixed. METHODS. One hundred twenty‐five women with confirmed metastatic (n = 122) or locally recurrent (n = 3) breast cancer were randomly assigned either to the supportive‐expressive group therapy condition (n = 64), where they received educational materials plus weekly supportive‐expressive group therapy, or to the control condition (n = 61), where they received only educational materials for a minimum of 1 year. The treatment, 90 minutes once a week, was designed to build new bonds of social support, encourage expression of emotion, deal with fears of dying and death, help restructure life priorities, improve communication with family members and healthcare professionals, and enhance control of pain and anxiety. RESULTS. Overall mortality after 14 years was 86%; median survival time was 32.8 months. No overall statistically significant effect of treatment on survival was found for treatment (median, 30.7 months) compared with control (median, 33.3 months) patients, but there was a statistically significant intervention site‐by‐condition interaction. Exploratory moderator analysis to explain that interaction revealed a significant overall interaction between estrogen‐receptor (ER) status and treatment condition (P = .002) such that among the 25 ER‐negative participants, those randomized to treatment survived longer (median, 29.8 months) than ER‐negative controls (median, 9.3 months), whereas the ER‐positive participants showed no treatment effect. CONCLUSIONS. The earlier finding that longer survival was associated with supportive‐expressive group therapy was not replicated. Although it is possible that psychosocial effects on survival are relevant to a small subsample of women who are more refractory to current hormonal treatments, further research is required to investigate subgroup differences. Cancer 2007. © 2007 American Cancer Society.
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