Wednesday, February 15, 2017

Using scalp cooling systems prevent hair loss by 50% in patients receiving cancer chemotherapy.



Dignicaps

Use of cooling caps or cooling systems during cancer chemotherapy for early stage breast cancer reduces the hair loss by almost 50% according to two studies published simultaneously on February 14 in Journal of American Medical Association.

The most dreaded complication of cancer chemotherapy is hair loss, nearly 50% of patients report it to be the most traumatic aspect of chemotherapy. Additionally, 8% of patients who could have benefitted from it refuse to undergo chemotherapy fearing the hair loss.

Although Cooling caps and have been in market since some time, but their use was not backed by scientific studies. The two recent RCTs use different systems for cooling the scalp, but both show positive results.

The investigators explain that cooling results in constriction of scalp blood vessels, reducing the amount of chemotherapeutics delivered to the hair follicles thereby reducing hair loss.
  
The article by Nangia et al. in this issue of JAMA report the result of SCALP trial, a multicenter, randomized trial testing 182 women with breast cancer receiving chemotherapy with a taxane, anthracycline, or both. This trial used Orbis Paxman Hair Loss Prevention System (Paxman Coolers Ltd), which has yet to receive FDA approval in the United States.[i]

Paxman.com
The Paxman system comprises of a small compact mobile refrigeration system connected to two lightweight silicone caps, the inner one is made of silicone and outer one is of neoprene.

The patient’s scalp is lowered in temperature to approximately 18°C by circulating a special coolant throughout the cap at -4°C.

Scalp cooling was carried out for 30 minutes each before and during therapy and 90 minutes after the therapy is over for each session of chemotherapy infusion.

The study results showed variable results depending upon type of agent used and clinical expertise of the treating physician. Hair retention rate was 16% inpatient anthracycline-based regimen vs. 59% in those on taxane-based regimen.

The second study by Dr.Hope S. Rugo and colleagues used the DigniCap, approved by FDA  for use in the United States since 2015.The study used Dean scale to assess hair loss and none of the patient in the study group received anthracyclines.[ii]

Nearly 66%of study participants experience 50% less hair loss assessed at 4 weeks after therapy as compared to 0% in control group.

“Despite difference in study designs, inclusion criteria and type of device, the results of these two studies are reassuringly similar: scalp cooling was associated with prevention of significance hair loss in approximately 50% of patients,” says Dawn L. Hershman, MD, MS, from the Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, in an accompanying editorial.[iii]

"Identifying interventions, such as scalp cooling for the prevention of chemotherapy-induced alopecia, that reduce or eliminate treatment-associated toxic effects will help ease the distress associated with chemotherapy and may, as a result, improve outcomes for patients with breast cancer," Dr Hershman concludes.

Fear that scalp metastasis will not be eradicated because of decline in drug delivery due to cooling is the number one reason that scalp cooling devices have not been very popular in the United States. In this study a median follow up of 29.5 months in patients in the scalp cooling group has not demonstrated any evidence of metastasis.


Two nonprofits organization in US offer help to women and men undergoing chemotherapy access and use scalp-cooling technology to help keep their hair.  They are The Rapunzel Project and The Hair to Stay Foundation. Visit the site by clicking the link for more information.


                                             DigniCap - What is Scalp Cooling








[i] http://jamanetwork.com/journals/jama/article-abstract/2601500
[ii] http://jamanetwork.com/journals/jama/article-abstract/2601503
[iii] http://jamanetwork.com/journals/jama/article-abstract/2601483

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