Socioeconomic, comorbidity, lifestyle, and quality of life comparisons between chronic rhinosinusitis phenotypes

BACKGROUND

Chronic rhinosinusitis (CRS) is a heterogeneous group of inflammatory sinonasal disorders with key defining symptoms, but traditionally separated into phenotypes by clinical/endoscopic findings. It is not known whether the two phenotypes have differing socioeconomic, comorbidity, and lifestyle differences. This analysis of the Chronic Rhinosinusitis Epidemiology Study (CRES) database sought to analyze any key differences in the socioeconomic variables between those with CRS with nasal polyps (CRSwNPs) and those without nasal polyps (CRSsNPs). We also sought to analyze differences in comorbidities, lifestyle, and quality of life.

METHODS

Patients with a confirmed diagnosis of CRS in secondary and tertiary care outpatient settings in the UK were invited to participate in a questionnaire-based case-control study. Variables included demographics, socioeconomic factors, comorbidities, lifestyle factors, and health-related quality of life (HRQoL) (level 3 evidence).

RESULTS

A total of 1204 patients' data were analyzed: 553 CRSsNP and 651 CRSwNP participants. The key socioeconomic variables did not demonstrate any notable differences, nor did lifestyle variables other than alcohol consumption being higher in those with CRSwNP (P = .032), but the latter was not significant after adjusting for age and sex. Aside from confirmation of asthma being more common in CRSwNP, it was notable that this group complained less of upper respiratory tract infections (URTIs), and CRSsNP participants showed evidence of worse HRQoL scores in respect of body pain (P = .001).

CONCLUSIONS

Patients with CRSwNP experience higher rates of asthma and lower rates of URTIs; patients with CRSsNP have worse body pain scores. Otherwise, there are no demonstrable significant socioeconomic, comorbidity, lifestyle, or quality of life differences between the two phenotypes.

LEVEL OF EVIDENCE

3 Laryngoscope, 2021.

Systematic literature review of humanistic and economic burdens of chronic rhinosinusitis with nasal polyposis

OBJECTIVES

We conducted a systematic literature review (SLR) of randomized controlled trials and real-world evidence (RWE) studies to determine the humanistic (e.g. health-related/disease-specific quality of life [QOL]) and economic (e.g. direct and indirect costs) burdens of chronic rhinosinusitis with nasal polyposis (CRSwNP).

METHODS

The SLR adhered to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Embase, MEDLINE and Evidence-Based Medicine Reviews databases were searched using OVID. Relevant studies involving adult patients with CRSwNP published between 1 January 2008 and 16 February 2019 were included, with relevant conference abstracts from 1 January 2017, onward.

RESULTS

Sino-Nasal Outcomes Test (SNOT)-22 was the most frequently used disease-specific health-related QOL/patient-reported outcomes instrument for patients with CRSwNP. Baseline SNOT-22 scores ranged from 25 to 73 for surgical candidates and from 14 to 56 for medically managed patients with CRSwNP. Mean baseline EuroQol-5 Dimensions (EQ-5D) index for patients with CRSwNP ranged from 0.81 to 0.86, and mean baseline Short Form-6 Dimensions (SF-6D) ranged from 0.67 to 0.75. Three months (EQ-5D) and 5 years (SF-6D) post-endoscopic sinus surgery (ESS), rates increased from 0.81 to 0.89 and from 0.69 to 0.80, respectively. One year post-diagnosis, patients with CRSwNP had significantly more systemic prescriptions, underwent significantly more medical procedures, demonstrated greater health care resource utilization and had significantly greater mean health care costs compared with matched controls (all p < .001). Overall, for patients with initial ESS, CRSwNP was associated with higher disease-related expenditures compared with CRS without nasal polyposis (NP), even for patients who did not undergo revision surgery.

CONCLUSIONS

This SLR identified substantial humanistic burden among surgery candidates. RWE shows that surgeries were used to treat relatively more severe CRSwNP patients as recommended by guidelines. Patient QOL is improved significantly after surgery; however, there is a lack of evidence on patients with revision surgery. Surgery is also associated with higher costs, and the presence of NP was a predictor of revision surgery. Patients with CRSwNP demonstrate greater health care resource utilization and costs compared to those with CRS without NP. Costs associated with different severity of CRSwNP and revision surgery need to be assessed further.

Long-Term Clinical Follow-Up of Patients With Chronic Rhinosinusitis

Objective:

This study comprised a long-term follow-up of a cohort of patients with chronic rhinosinusitis (CRS) regarding clinical features and symptomatology.

Methods:

Data from 42 patients with CRS were available from a previous study. Forty of these patients were alive and were contacted for inclusion after approximately 10 years. Patients completed a questionnaire about disease and symptoms, and underwent a clinical examination.

Results:

Thirty-four patients (85%) responded and could be included and evaluated. For the participants in this follow-up study median length of time between initial inclusion (C1) and follow-up (C2) was 11 years (range: 8-15). In some patients the CRS shifted phenotype over time, from CRS with nasal polyposis to CRS without nasal polyposis or vice versa. The median total visual analogue score for combined sinonasal symptoms for all patients was statistically significantly reduced at follow-up. For individual patients, scores for nasal congestion, nasal discharge, facial pressure, and hyposmia were also statistically significantly reduced. The most frequently reported symptom-relieving treatments were nasal steroids and saline rinsing of the nose. Self-reported general quality of life was statistically significantly improved at C2 compared to C1.

Conclusion:

At long-term follow-up, symptoms were generally reduced and patients reported an improved quality of life. Patients can be given hope for eventual symptom relief. CRS is a chronic condition that seems to harbor the ability to alter its phenotype after several years. Topical corticosteroids and saline rinsing of the nose should be emphasized, since patients consider these treatments to be of high value.

Efficacy and safety of omalizumab in nasal polyposis: 2 randomized phase 3 trials

BACKGROUND

Chronic rhinosinusitis with nasal polyps (CRSwNP) is characterized by IgE hyperproduction and eosinophilic inflammation. The anti-IgE antibody, omalizumab, has demonstrated efficacy in patients with CRSwNP and comorbid asthma previously.

OBJECTIVE

Our aim was to determine omalizumab safety and efficacy in CRSwNP in phase 3 trials (POLYP 1 and POLYP 2).

METHODS

Adults with CRSwNP with inadequate response to intranasal corticosteroids were randomized (1:1) to omalizumab or placebo and intranasal mometasone for 24 weeks. Coprimary end points included change from baseline to week 24 in Nasal Polyp Score (NPS) and Nasal Congestion Score. Secondary end points included change from baseline to week 24 in Sino-Nasal Outcome Test-22 (SNOT-22) score, University of Pennsylvania Smell Identification Test, sense of smell, postnasal drip, runny nose, and adverse events.

RESULTS

Patients in POLYP 1 (n = 138) and POLYP 2 (n = 127) exhibited severe CRSwNP and substantial quality of life impairment evidenced by a mean NPS higher than 6 and SNOT-22 score of approximately 60. Both studies met both the coprimary end points. SNOT-22 score, University of Pennsylvania Smell Identification Test score, sense of smell, postnasal drip, and runny nose were also significantly improved for omalizumab versus placebo. In POLYP 1 and POLYP 2, the mean changes from baseline at week 24 for omalizumab versus placebo were as follows: NPS, -1.08 versus 0.06 (P < .0001) and -0.90 versus -0.31 (P = .0140); Nasal Congestion Score, -0.89 versus -0.35 (P = .0004) and -0.70 versus -0.20 (P = .0017); and SNOT-22 score, -24.7 versus -8.6 (P < .0001) and -21.6 versus -6.6 (P < .0001). Adverse events were similar between groups.

CONCLUSION

Omalizumab significantly improved endoscopic, clinical, and patient-reported outcomes in severe CRSwNP with inadequate response to intranasal corticosteroids, and it was well tolerated.

Chronic Rhinosinusitis Patients With and Without Polyps Experience Different Symptom Perception and Quality of Life Burdens

Objective

We sought to determine if chronic rhinosinusitis (CRS) patients with nasal polyps (CRSwNP) differentially perceived CRS symptom burden compared to patients without nasal polyps (CRSsNP) and to what extent CRS symptom severity was associated with quality of life (QOL) and patient-reported symptom control in the 2 groups.

Methods

A total of 600 patients (266 CRSwNP and 334 CRSsNP) presenting with CRS were recruited. CRS symptom burden was assessed with the 22-item Sinonasal Outcome Test (SNOT-22). SNOT-22 nasal, sleep, ear/facial discomfort, and emotional subdomain scores were calculated. General health-related QOL was assessed with the visual analog scale of the 5-dimensional EuroQol questionnaire (EQ-5D VAS). Patients rated their CRS symptom control on a 5-point scale.

Results

SNOT-22 scores did not differ between CRSwNP (mean: 35.6) and CRSsNP (mean: 36.3). There were no differences in nasal, sleep, and emotional subdomains of the SNOT-22. CRSsNP had higher ( P = .003) ear/facial subdomain scores than CRSwNP, while CRSwNP reported greater hyposmia ( P < .001). EQ-5D VAS was significantly lower ( P = .011) in CRSsNP (mean: 68.9) compared to CRSwNP (mean: 73.2). However, CRSwNP patients reported significantly less symptom control, compared to CRSsNP, in association with nasal and emotional symptoms.

Conclusion

CRSwNP and CRSsNP have differences in symptom profile, effect on health-related QOL, and patient-perceived symptom control. CRSsNP experience significantly greater burden of ear/facial discomfort, while CRSwNP report greater hyposmia. Although CRSsNP reports lower general health-related QOL overall, CRSwNP patients had lower levels of CRS symptom control for every incremental increase in symptom burden suggesting greater sensitivity/intolerance to CRS symptoms.

Staphylococcus aureus impairs sinonasal epithelial repair: Effects in patients with chronic rhinosinusitis with nasal polyps and control subjects

BACKGROUND

The effect of Staphylococcus aureus on nasal epithelial repair has never been assessed in patients with chronic rhinosinusitis with nasal polyps (CRSwNP).

OBJECTIVE

This study aimed to determine whether (1) nasal epithelial cell cultures from patients with CRSwNP and control subjects repair differently; (2) S aureus exoproducts compromise nasal epithelial repair; (3) S aureus alters lamellipodial dynamics; and (4) deleterious effects could be counteracted by the Rho-associated coiled-coil kinase inhibitor Y-27632.

METHODS

Primary nasal epithelial cells (pNECs) collected during surgeries were cultured and injured under 3 conditions: (1) basal conditions, (2) exposed to S aureus exoproducts, and (3) exposed to S aureus exoproducts and Y-27632. Epithelial repair, lamellipodial dynamics, and cytoskeletal organization were assessed.

RESULTS

Under basal conditions, pNEC cultures from patients with CRSwNP presented significantly lower repair rates and reduced lamellipodial protrusion length and velocity than those from control subjects. S aureus exoproducts significantly decreased repair rates and protrusion dynamics in both control subjects and patients with CRSwNP; however, the effect of S aureus on cell protrusions was more sustained over time in patients with CRSwNP. Under basal conditions, immunofluorescence assays showed significantly reduced percentages of cells with lamellipodia at the wound edge in patients with CRSwNP compared with control subjects. S aureus altered cell polarity and decreased the percentage of cells with lamellipodia in both groups. Finally, Y-27632 prevented the deleterious effects of S aureus exoproducts on CRSwNP repair rates, as well as on lamellipodial dynamics and formation.

CONCLUSIONS

S aureus exoproducts significantly alter epithelial repair and lamellipodial dynamics on pNECs, and this impairment was more pronounced in patients with CRSwNP. Importantly, Y-27632 restored epithelial repair and lamellipodial dynamics in the presence of S aureus exoproducts.

Precision Medicine in Chronic Rhinosinusitis with Nasal Polyps

Purpose of Review

Chronic rhinosinusitis is a disease with high prevalence, significant impact on health-related quality of life (HRQoL) and it is associated with substantial healthcare and productivity costs. We face an urgent need to improve the level of disease control and achieve higher patient satisfaction and disease prevention. Precision medicine is increasingly recognized as the way forward in optimal patient care. The combination of personalized care, prevention of disease, prediction of success of treatment, and participation of the patient in the elaboration of the treatment plan is expected to guarantee the best possible therapeutic approach for individuals suffering from a chronic disabling condition.

Recent Findings

This is a narrative review on the current state of endotypes, biomarkers, and targeted treatments in chronic inflammatory conditions of the nose and paranasal sinuses. Different phenotypes of rhinitis and chronic rhinosinusitis (CRS) have been described based on symptom severity and duration, atopy status, level of control, comorbidities, and presence or absence of nasal polyps in CRS. The underlying pathophysiological mechanisms are diverse, with different endotypes being recognized. Novel emerging therapies are targeting specific pathophysiological pathways or endotypes. This endotype-driven treatment approach requires careful selection of the patient population who might benefit from a specific treatment.

Summary

This review provides a comprehensive overview of the current state of endotypes, biomarkers and targeted treatments in chronic inflammatory conditions of the nose and paranasal sinuses.

A possible role of stem cells in nasal polyposis

Since its discovery, the understanding of stem/progenitor cells raised dramatically in the last decade. Their regenerative potential is important to develop new therapeutic applications, but the identification advanced much faster than our understanding of stem/progenitor cells. In nasal polyposis, little is known about stem cells/progenitor cells and their ability. However, the further characterization of stem cells/progenitor cells may provide new treatment options for combating nasal polyposis. This review highlights the knowledge of the current literature about stem cells/progenitor cells in nasal polyposis and how this may be exploited in the development of novel treatment strategies.